Harriet Lily Snape is the biological daughter of Severus Snape and Lily Evans as well as the adoptive daughter of James Potter and the twin sister/half-sister of Harry James Potter. She was conceived when Lily had slept with both Severus and James in the same week, causing two eggs to be fertilized by two different men in a very rare occurrence. Harriet is five minutes younger than her brother Harry. Upon seeking a paternity test to find out Harry and Harriet's parentage, Lily and James had learned that Harriet was not James' child, but Harry was. Putting two and two together and fearing for Harriet's life, James quickly adopted Harriet and treated her like she was his own flesh and blood, thinking Severus would learn of her existence and would either harm Harriet or give her to Voldemort.
A year went by and Lily as well as James only told Dumbledore of Harriet's true parentage for her own safety. When Severus learned of the prophecy of the twins he told this to Voldemort, but immediately regretted what he had done, going to Dumbledore to warn him of what he had learned. He begged Voldemort to spare Lily, not knowing that Harriet was his child, and Voldemort gave Lily a chance to live, however, she refused to let him touch her children and thus sacrificed her life for them. Dumbledore came and had Hagrid take Harry away while Minerva McGonagall took Harriet to a foster family that Dumbledore had pre-selected.
Severus came to see Lily upon learning of her death. When he arrived he cradled her lifeless body in his arms before finding Harriet's original birth certificate. Upon reading it, he found that Lily had bore his child, a girl named Harriet. Severus quickly went to Dumbledore and begged him to return Harriet to him, noting that she was all he had left of Lily, but Minerva had already taken Harriet into hiding to keep Harriet safe from Voldemort, telling Severus that it was for her own safety. Severus spent years looking for Harriet, but was unable to find her, leaving him a very bitter man. His last resort was to become potions master and wait patiently for Harriet to be admitted to Hogwarts in order to get her back.
Harriet had lived with the Kingsley's for the past ten years. Ethan Kingsley appeared kind to others, but was a cruel and vindictive man who abused both Harriet and his wife Claire daily. He was the Prime Minister, yet he inflicted the most heinous torture on Harriet daily. Her foster mother, Ethan's abused wife Claire was the one kind soul in her life that kept her sane. She tried her best to keep her safe, though her efforts were futile. Claire was a witch who was forced to repress her magic unless it was being used to keep Harriet's under control. One day as her eleventh birthday approached, she received a letter addressed to her, but Ethan quickly burned the letter. She had continued to receive these letters, but Ethan destroyed each and every one. The day before her birthday, a giant man broke down their front door and caught Ethan beating and strangling Harriet with Claire on the floor unconscious from her efforts to stop him from trying to kill the child.
The giant man couldn't believe his eyes and threw Ethan off of Harriet with ease as Harriet's vision blurred and she began to lose consciousness. The last thing she heard was the giant man calling out her name before she passed out. When Harriet came to, the man had placed her on the couch and Claire was awake tending to her injuries. Hagrid had given her some healing potions to help her recover. Hagrid explained to Hatty that she was a witch, just like Claire, and that she had been invited to Hogwarts. He reassured her that she would be safe there, and that he would take Harriet and Claire to get her school supplies. Harriet told him that her foster father would never allow her to go nor would he pay for her expenses.
Hagrid told her that she didn't need his money, that her biological parents had left her a small fortune, and that she had helped stop a very powerful wizard when she was a baby. Claire confirmed that he was telling the truth, that Harriet was famous. Hagrid gave Harriet a birthday cake and they left the next morning where Harriet gathered enough money for her school supplies. For her birthday, Hagrid got her a gift, a black owl which she named Nyx for the Greek personification of night. Harriet had never had a gift before, Ethan would not allow it, much less a pet.
Claire had taken Harriet to the train station on September first without Ethan knowing, however, he found out and followed them there, confronting them at the platform. As Ethan tried to force Harriet back home, he savagely beat and strangled Harriet again, but Claire knew she had to do something. She quickly pushed Hatty and her belongings through the platform, not caring about the consequences, just wanting Harriet to be safe at school, where she thought Ethan could not get to her.
Harriet boarded the train and sat alone in the carriage until a girl named Hermione Granger sat beside her. They learned they had a lot in common, both of them were extremely bright and had memorized their school books. Hermione repaired Harriet's glasses with magic, which had been broken for years as her foster parents refused to pay to have them fixed. They became fast friends. When they arrived at Hogwarts and became sorted, Harriet was sorted into Slytherin due to her ambition to prove herself, though the hat deliberated for fifteen minutes, making her the first hat stall in years. She noticed a professor staring at her when her name was called to be sorted, and felt a pair of eyes on her.
Harriet, being a natural born legilimens who couldn't control her own abilities, could hear all the thoughts and see the memories of every single individual in the castle crammed into the Great Hall, all except the professor who seemed to stare at her. This caused Hatty immense pain, who left the Great Hall once she joined the other Slytherins. The professor followed her and helped her regain control over her own mind once more. It was then that the professor got a good look at her. Harriet was an extremely thin and sickly girl, malnourished, practically skin and bones, and rather short for her age. He saw every single injury inflicted on her that day. He entered her thoughts to see the extent of her injuries, her wand arm having been snapped in two like a toothpick, her ribs practically shattered, her windpipe crushed. Not to mention she had two black eyes, a swollen lip with a massive cut on it, her nose slightly disfigured from being broken.
The professor that had helped her was none other than Severus Snape, the potion's master, and Harriet's biological father. While he was normally in control of his emotions, seeing Harriet in this state destroyed him inside. He was furious and devastated. Dumbledore had told him that she would be safe, but Harriet had been far from safe. Severus knew that Harriet needed serious medical attention, he was going to take her to the hospital wing, but Harriet soon passed out.
When Harriet came to, most of her injuries had been healed, though some would take longer to heal. Severus swore that he would never let harm befall his daughter again and that Ethan Kingsley would pay for what he had done to her. Three weeks later, Ethan and Claire Kingsley arrived at Hogwarts. Ethan explained to Dumbledore that Claire would be homeschooling Harriet from now on and forced her to pack. He stopped her in the dungeons on the way to the Slytherin common room right outside of the potion's classroom where he thought they were alone.
Ethan noticed that she had been eating when he never gave her permission to do so and snapped her harm in half before repeatedly punching her in the face until she fell to the ground where he kicked her repeatedly in the ribs. He then grabbed Harriet by the throat and choked her as hard as he could until Harriet began to lose consciousness, thinking she was about to die. Claire tried to stop him, but he knocked her out cold. As Harriet began to pass out, all she heard was a single word, or rather spell, screamed out of pure rage from a familiar voice that she normally never heard express such wrath. Sectumsempra. Harriet fell to the floor and passed out.
When Harriet came to, she was in the hospital wing with extensive injuries. Claire's own injuries were being tended to, and one person was sitting by her side, Severus Snape. He had been holding her hand, while her arm had been healed by Madam Pomfrey. Ethan Kingsley had mysteriously vanished and was nowhere to be found. Severus had not told Harriet about his role in her existence, but knew that he needed to, that Harriet deserved a better life than what Ethan had given her. Severus told Harriet that she was finally safe and that Ethan would never hurt her or Claire again. He took out Harriet's original birth certificate and handed it to her before telling her the details of his romance with her mother Lily, that he didn't know that Harriet existed until it was too late.
Severus explained to her that he had spent years looking for Hatty, but had been unsuccessful and that he wished he could have raised her himself, that he felt immeasurable guilt for being too late to take her in and letting Ethan torture her. Snape said that when he first saw the state of her three weeks prior that it devastated him. Harriet listened to him and wasn't sure what to think at first, but the more she heard, the more she realized that he truly loved her and would do anything for her. He had saved her life, and she would be forever grateful.
Harriet learned that she had a twin brother during her first potion's class with Snape. Harry wasn't sure what to expect with Hatty being a Slytherin, but he saw how sweet and kind Hatty was, and didn't understand how she became a Slytherin until Hermione explained what a hat stall was and why it took fifteen minutes for the hat to pick Hatty's house. Hatty joined Harry's friend group, being the only Slytherin the trio liked, and for the first time, Hatty had friends and a brother. She grew incredibly close to the trio, especially her twin half-brother, Harry. They had both felt like something had been missing from their lives, and now that they were together, they felt more complete.
Hatty was an extremely smart girl, she was born with an eidetic tonal memory and was hyper-observant, making memorizing vast amounts of information incredibly easy. Her best subjects were potions and defense against the dark arts. Potions came extremely naturally to her thanks to both of her biological parents' talents in the subject, though she was good at DADA, she had been too afraid to use it due to the abuse she suffered at the hands of Ethan. As she grew closer to her father, he managed to help her come out of her shell, undoing some of the mental blocks that repressed her magic.
During Hatty's first flying lesson, she and Harry proved themselves talented flyers and seekers. Snape called her into his office, though Hatty thought he was angry with her. Like McGonagall had done with Harry, Snape had made Hatty a seeker for the Slytherin team, mostly hoping to see her brother fail and give him some satisfaction, but also to help instill more confidence in his incredibly shy and quiet daughter. During her first match against Gryffindor, something happened to her brand new broom, a Nimbus 2000, which had been purchased by both Severus and Claire, who had taken over Ethan's vast fortune after his disappearance. She had become the new alchemy professor to stay close to Harriet as she loved her more than anything in the world.
Hatty and Harry's brooms began to jerk around, having lost control by some unknown force. Severus had been viewing the match as the twins were thrown around on their brooms and began to perform a counter curse, maintaining eye contact with the twins as he muttered the counter curse. Hermione noticed Snape muttering something as she realized the twins broom's were jinxed, and thinking it was Snape, she hurried off towards the stand he was sitting in and set his robes aflame. Someone noticed his robes on fire and he quickly put them out, but while Harry's broom returned to normal, Snape had turned around just in time to watch in horror as Harriet was thrown off her broom and fell fifty feet towards the ground. Snape had run from the stands as fast as he could as Hatty hit the ground and a crowd formed around her. Harry had caught the snitch, ending the match, and had tried to wake his sister up as Snape ordered and pushed his way through the crowd.
Harriet had landed on her shoulder and left arm, but was also knocked out cold as Snape felt her pulse. Hermione had fetched McGonagall to tell her what she had witnessed, saying loudly that Snape had been the one to jinx Hatty's broom, causing her to fall. Until now, Snape had kept his relationship with Hatty a secret from the students and Hatty had as well, she hadn't even told her brother. Most of the staff members knew that she was his daughter. Snape had begun to pick Harriet up and held her in his arms as Hermione slung her accusations at him. He hissed at the Gryffindor girl that he would never hurt his own daughter, much to the shock of the other students, who had whispered about this revelation amongst themselves as Snape carried her to the Hospital Wing. Dumbledore soon confronted Snape regarding these accusations where he told his side of the story, that he noticed the jinx and he was performing a counter curse. Dumbledore accepted this as Snape sat at Harriet's side while Madam Pomfrey tended to her injuries.
SEVERUS SNAPE Link Here
Severus Snape is the biological father of Harriet. Before she was born, Lily Evans had been with Severus Snape, but upon learning that he was still a Death Eater, she had left him after sleeping with him. When she went to James she didn't know she was pregnant and they slept together within the same week, causing Lily to be pregnant with twins from different fathers. Lily then married James when pregnant with the twins, but she was suspicious when Harriet was born and had a paternity test performed, confirming that James was not Harriet's father. What had happened was incredibly rare, but afraid that Severus would come and harm Harriet, James adopted her, hiding her original birth certificate within the home they were hiding in.
When Severus told Voldemort of the prophecy he begged him to spare Lily, not knowing that he had a daughter. Upon finding out that Lily had died, Severus held her in his arms before looking around the home and finding Harriet's original birth certificate, learning that Lily had twins and one of the twins was his. He tried to stop Professor Dumbledore from taking Harriet away and to give her to him because he wanted the only link to Lily that he had left, however Harriet was gone and Professor Dumbledore would not tell him where she was for her own safety. Severus spent years looking for his daughter, only to come up empty handed, making him a very bitter man in the process. Eventually he took the job of potions master for Hogwarts in hope of finding Harriet once more when she became of age.
LILY POTTER Link Here
Lily Potter is the biological mother of Harriet and Harry. Upon learning that Harriet was not James' child, she became instantly worried that Severus would come to harm Harriet due to his Death Eater ties. James took it upon himself to adopt Harriet and keep her true parentage a secret until the day they died. Lily adored both of her children, despite Harriet's resemblance to Snape with her hair color, her eyes looked just like her own. On Halloween night in 1981, Lily gave up her life to protect her children, who were both part of the prophecy. Voldemort's attack left them both with scars on their foreheads.
JAMES POTTER Link Here
James Potter is the adoptive father of Harriet and the biological father of Harry. After learning that Harriet was Snape's child, he quickly adopted Harriet as his own daughter to prevent Snape from learning about her existence, believing that if Snape knew, he would harm Harriet or hand her over to Voldemort. He protected this secret until his death as Voldemort killed him to get to the twins. Even though Harriet was not biologically his child, he loved her like she was his own flesh and blood, and left his fortune to both her and Harry in his will.
HARRY POTTER Link Here
Harry Potter is Harriet's older twin brother/half-brother. Born due to a very rare occurrence where they were both conceived in the same week into two different eggs, Harry and Harriet were part of a prophecy that would destroy Voldemort. However, on the day of James and Lily's death, Harry was sent to live with their Aunt and Uncle while Harriet was separated from him and sent to a foster family, Dumbledore believing that if the twins were separated it would protect them from harm. Harry didn't meet Harriet until they both started Hogwarts and noticed their same last name, similar looks, and of course the scars that adorned their foreheads.
ETHAN KINGSLEY Link Here
Ethan Kingsley is the foster father of Harriet Potter. Appearing kind towards others, Ethan in actuality is a very cruel and vindictive man who severely abuses both Harriet and his incredibly kindhearted wife Claire. He is the current Prime Minister for muggles, appearing kind and charismatic towards anyone who isn't part of his family. When Snape learns of what Ethan has done to his daughter, and Ethan shows up to reclaim Harriet, he makes sure that the Prime Minister disappears, saving Harriet's life as he tries to kill her in the dungeons so that he will never come near Harriet ever again.
CLAIRE KINGSLEY Link Here
Claire Kingsley is the foster mother of Harriet Potter. She is a kindhearted American witch, who is forced to give up magic by her severely abusive husband. She does her best to try to protect Hatty from Ethan, but her efforts are futile and she is frequently knocked out cold when she interferes. After Ethan disappears, she gains a new wand and takes over his vast fortune, becoming the new Alchemy professor at Hogwarts so she can remain close to Hatty.