Dumbledore sends Dobby to retrieve an old student who left year one after a tragic death close to her, Dobby brings the girl a letter, begging her to come back with him to a place, Grimmauld Place.

Harry walked around Grimmauld Place one night, looking at all the pictures that are hung up on the wall, finding one impartial one of a golden-haired girl with a bright smile, he asked Sirius and Remus about the girl in the picture, learning her whole story.