The unwanted

The youngest of all her siblings, Laura goes back to Hogwarts for her final year. But her easy, care free year takes a turn for the worst. When on the 1st day she sees someone but cant seem to put a face to the face. Will she remember him? Will they become friends? Will they fall in love? Will they last?
Okay some people are confused about some parts of the story. So this is here to make it clear. Ginny and Harry had 3 children, some people have called the last child Lily, I wanted to call her Laura. She doesn't look like her family. But she has somethings that look like them.