Meg first appears with Christine, the two girls hurrying to rehearsal. They are ballerinas in the show that night. When the new managers arrive, the remark that Meg is a "blonde angel" while watching her dance. When Raoul enters, Christine tells Meg about how the two of them had been childhood sweethearts. Meg comments that Raoul was handsome, and when he didn't see Christine, Meg comforts her.

She watches Christine demonstrate her skill at singing, and after the performance is seen searching for her good friend. She finds her friend in the chapel, and congratulates her. She inquires as to who Christine's tutor was, and Christine explains that her father sent an angel of music. Meg shakes her head and says that stories like that can't come true. She expresses concern for Christine, worrying that her friend was afraid or upset. She leads Christine away from the chapel.

Meg is the one to get the keys and enter Christine's room after Christine had vanished. She finds the door in the mirror, and begins to follow the passageway, but was stopped by her mother and lead away.

Meg informs the managers and Raul that Christine needed rest after they were asking to see her when she returned.

Meg plays a silent role in the next opera, like Christine.

Meg often appears backstage with her mother during portions of the operas that are performed.

Meg tries to follow her mother and Raoul after Christine is kidnapped, but her mother tells her to remain in the above world. Meg obeys for a time, and tries to convince the rest of the cast to obey as well, but in the end she is seen in the catacombs with the rest of the cast. She finds the monkey music box playing and the white half mask beside it.