Psychotic Love- Cedric Diggory, George Weasley

Trixa Black hates many things-her father, Sirius Black, foremost among them. Abandoned and betrayed, she's spent years nursing the wounds left by his imprisonment in Azkaban, a sentence for a crime that shattered her life and stained her family name. That, and another traumatic incident have clawed away at her sanity, questioning her to the point of near madness. As a student at Hogwarts, Trixa is determined to claw her way above the whispers and rumors that follow her like a shadow.

But when Sirius breaks out of prison, everything changes. Suddenly, the spotlight is back on her- and the hatred she's buried beneath resurfaces with a vengeance. Driven by anger and a desperate need for answers, Trixa is willing to do anything to claim what is hers.

Revenge. No matter the cost.

What she discovers shakes her to the core: Sirius may be innocent, but his allegiance lies not with her, but with Harry Potter, the boy who has always stood in her way. As the walls she's built around herself begin to crumble, Trixa faces a painful choice-cling to her hatred and isolation, or risk everything to confront the truth about her family, her past, and herself.

Oh, and don't forget to add two surprising new friends- Cedric Diggory and George Weasley.

(This story does loosely follow the plot of the Harry Potter books.)
Prisoner of Azkaban- The Deathly Hallows