She wasn't planning on dying, but it's not going to stop her from living. Aurelia Potter, older sister of Charlus Potter, heiress Potter and Head Girl, didn't regret comforting Myrtle when she was crying in the girls bathroom, not even when it resulted in her death. Now she's a ghost, even if a weird one that has the Spirit Division stumped. Remembering exactly what killed her, and knowing of a little fifth year brat that prances about saying that he's the Slytherin heir it's easy enough for her to know the culprit. And she's getting revenge by haunting his ass until he goes mad, if he isn't already. Tom Riddle, you really shouldn't have pissed the Slytherin Head Girl.