Cubby has done this since the day I got him. He is now almost 3 years old, early next year he will be atleast. He still does this. When I first got him I only let him play with cat toys and not my hands, but he wouldn't leave my hands alone. Now he still plays with his mice and my hands. If I scream ouch or no or anything else at him like stop, he bites even harder, if I quit moving my hand he will either start kicking it, or he will keep biting. He has always done this to me. Good luck with her. I'm still waiting for Cubby to outgrow it if he ever will.

Katie