Hi, has anyone read this? Someone bought it for me a while ago but I've not not read it yet (I prefer to read on the Kindle). DD (13) has just found it in spare room and wants to read it this weekend when we go away. If you've read it, would you say it's suitable for a 13 year old? She's read teen crime/murder/thriller stuff a lot, I'm more concerned about sex/bad language. Thanks