I May have helped an Evil Wizard. (rewrite)

Harriet Potter was perfectly ordinary, thank you very much.
That is, she thought so until she was wisked away into a world of magic. Now, sorted into seemingly the most unpopular house in the school and dealing with the danger of things she'd never even heard of, Harriet soon finds there's more to her new life that meets the eye. Pulled into an intrigue, she and her new-found friends must hope to survive the year.