Actually, in bad communities I've known kids to be experimenting with drugs at twelve, maybe not addicted to them yet. It's not completely unrealistic though.

And Chloe seems fine to me. I was wondering when we would get our first cutter character. It's actually quite realistic that there would be one, with the amount of kids turning to self harm these days.

I don't really see any problem with either CS, but that's just my opinion.