A couple notes :)

"Red hair, dirty as a pig, you're clearly a Weasley!" - Draco Malfoy

Um, no. Amber is a Potter, although that's probably worse than a Weasley, at least if you're the long-lost believed-dead sister of Harry Potter. Which, unfortunately, she is.

But Amber doesn't realise exactly what being who she is means, until she begins her new life at Hogwarts School of Witchcraft and Wizardry. Between taunts from the rude and overbearing Slytherins, to the constant suspicion and accusations about her mysterious past, she doubts she'll ever get through her first year. And she might not, but for a far different reason...

I don't own any of the original Harry Potter characters, Amber Potter is my own creation, though