After reading this book I was not disappointed. I do feel that I have a little better understanding (however I know that this is only one story/example). I can understand why YA readers might connect with the book. Although the protagonist, Callie...aka S.T. for Silent Treatment, self inflicts her wounds there are many other characters in the book with other problems that teenagers also deal with. Ultimately readers might connect with the same underpinning problem that Callie had...putting blame on herself for her family's problems.
I really liked the writing style used by McCormick, a first-person voice directed to the protagonist's therapist. I liked the ending and the initial healing between Callie and her father. I liked Callie's self-realization that she does need help, and that she actually wants to get better.
I'm already giving too much away so I better stop.