i just want you to let her know that things will be okay. Just tell her to ignore all the pressure from the outside world, and just try to be happy. And no matter what kind of hate and nasty comments she gets, she's going to be your girl.
She probably feels worthless and she thinks that she isn't worth anything. And i think that you need to find out what happened at that mean person's house.
I know that things will be okay. 126 cuts is a lot though... just try to make sure that she doesnt hurt herself anymore. She's done a lot of pain to herself already...
You take care of yourself too and remember that the both of you deserve the best.