The Blue Mirror, by Kathe Koja

Maggy doesn't really "do" school, and living with her alcoholic "mother" is not much of a life, but at least down at the Blue Mirror she can express herself with her drawing, especially with the fantasy of Cole, a charismatic street child. But when Cole steps out of fantasy to become her boyfriend, Maggy discovers the dangerous side of the streets and has to grapple her way back to reality.

For the first third of this book, I was pretty certain this was going to rank down at the very bottom of my list, but it slowly redeems itself...slightly. Koje writes in an annoying train-of-consciousness style where things are half-answered and storylines jump about chaotically. That makes for pretty tedious reading, and really makes it hard to relate to the characters.