Easy - The Girl who Lived Forever (Harry Potter's Sister)

Everyone knows the story of Lily and James Potter. How they were killed by the most feared dark wizard of the century, Voldemort. How their son, Harry escaped with merely a flesh wound.
But one thing no one knew about them, is the story of their daughter, who managed to survive hell.

This is the story of Peyton Mary Marlene Potter

Chamber of Secrets ✔️
Prisoner of Azkaban ✔️
Goblet of Fire ✔️