Power -and those strong enough to seek it

Amity has come from a long line of Gryffindor and is surprised when put into Slytherin. No one noticed because Harry Potter was put into Gryffindor and that's all that matters. Amity is powerful and gets that from her descendants. She is related to Gryffindor and the murderer who killed the first owner of the Elder Wand. Amity uses this power for something her parents, teachers, friends, and the world can't know about.