About me: After the opening of the Vault, Lilith's powers have grown substantially from absorbing Eridium, the element released after the defeat of the Destroyer. She was one of the founding members of the Crimson Raiders, along with Brick, Mordecai, and her then-boyfriend Roland.
During Hyperion's raid on New Haven, she, along with Roland and Mordecai, were defeated by Wilhelm. With the city overrun and herself presumed dead by Hyperion, they were forced to abandon New Haven for Sanctuary. Roland ended his relationship with Lilith, with the former focusing on Hyperion, while she drew Bloodshot bandits away from Sanctuary under the alias Firehawk.
After Roland is captured by the Bloodshots, she leaves a message under her Firehawk alias in the Crimson Raiders' safe telling the Vault Hunters to come to Frostburn Canyon. When they reach her base of operations, they discover that Roland isn't there, and that Lilith is the Firehawk. After fighting off waves of Psychos, Lilith returns to Sanctuary to lead the Raiders in Roland's absence. When he is finally rescued, both are happy to see each other, with Roland oblivious to Lilith's advances.
Lilith is told to stay and defend Sanctuary during the assault on Control Core Angel, but defies both Angel's insistence and Roland's orders to stay away. She assists the Vault Hunters in fighting off hordes of Hyperion robots and destroying Angel's Eridium injectors. With Jack's Siren catalyst dead, Roland goes to retrieve the Vault key, but is shot by Jack himself. Lilith attempts to attack him, but is restrained to replace his dead daughter to charge the Vault key. She teleports the Vault Hunters back to Sanctuary instead of killing them at Jack's orders.
She is taken to the Vault of the Warrior, where she charges the key against her will. The Vault Hunters find her there, along with Jack, who fights them, but is defeated. After his defeat, the key becomes fully charged, and Jack summons and controls the Warrior, which is defeated as well. With his vision of a Pandora ruled by order crushed, Jack angrily chastises the Vault Hunters, before being executed by them or Lilith. After Jack's death, she attempts to destroy the Vault key to prevent anyone else from using it for misdeeds. Instead, she inadvertently activates a map showing the location of the many other Vaults scattered throughout the galaxy. Following the events at the Vault, she returns to Sanctuary along with Mordecai and Brick, inheriting leadership of the Crimson Raiders and continuing their fight against Hyperion. She later attends Roland's burial along with Mordecai and Brick.