Would you read this book?

No I wouldn't, but most teen girls would. It's a good story, get busy and write it. If you suffer writer's block on a particular chapter, skip it and come back to it. You'll have to rewrite it several times anyway; all writers do. Another tactic is to just sketch in what you want the chapter is to be about just to hold its place; it all doesn't have to be perfect the first time through.