you'll be happy to know that there's a sequel coming out in April of this year called"Where She Went".
I read "If I Stay" a few months ago and was blown away by this book about a girl in a coma who has to decide if she wants to stay in the world where her parents and brother have died but she still has her boyfriend and her talent for playing cello or if she wants to "go" where her parents and brother have gone.
Although it's a tearjerker it is a lot more than that, a thoughtful and emotional look at what makes life worth living. I loved the character and the way she thought about life and death.
We're going to be pre-ordering the sequel later this week so look for it in the catalog next week and place a hold if you're interested.