In the first book I just finished was "Mockingbird" and one of the main character's (Caitlen) friend Michael understood her when she would talk because he was only 6 and she had aspbergers and she basically is a little kid in the mind even though she is just 11. But they both would talk about each others parents, and it's kind of hard to explain on a big impact that he had on her but I LOVE the book! But no one really had a big important impact on her but she had a teacher who was somewhat a counselor and she would talk to Caitlen about her brother who was shot and always made sure that Caitlen used her manners and looked at the person in the eyes(which she doesn't like). But like I said, it's a great book!