Let's see....this girl skinned a cat at the age of 13. She did this when she still had a young, developing mind. Obviously, something must've happened to her in her past to cause her to become that violent. And I don't think that someone that sick can all of the sudden just change for the better. It takes YEARS of intensive therapy. And, just as justamom said, children who abuse animals usually grow up to have severe mental illnesses. For instance, Jeffrey Dahmer and Ted Bundy!
I am all for you writing a no-rec on this girl. If something were to happen, and she had your letters, I think you'll be kicking yourself.