Who is Ginny Baker from Hate List and what is their importance?

Ginny Baker is at the top of Nick's "hate list". He searches for her under tables, and once he finds her, he shoots her in the face, causing extensive facial injuries. On the first day of school, Ginny is healed physically enough to attend classes, but she is an emotional mess. As a result, she decides to remain home and be tutored rather than remain in school. In the end, Ginny is unable to cope with her emotions regarding the shooting, and she attempts suicide.