If she was taken from her mother too early, she probably didn't learn that she's biting too hard. I've read that when kittens bite their momma too hard when nursing, the momma cat will make some sort of low growl. Kitten siblings will do the same thing when they're playing. If one's getting too rough, the other will let them know and they learn that they're playing too rough.

We started doing that with Josie when she gets out of hand and she automatically stops. Nothing real loud or mean . . . we just make a low growling sound, with our mouths closed, and she'll settle down. It's worth a try.

Also, you never want to use your hands as toys. We did that when Josie was tiny because it was cute. But then she got bigger and stronger, and she would attack our hands . . . it hurt!

Good luck!