Well sometimes the skin on top of the head just wont come off. I would put him/her in a tub of luke warm water that rises to about halfway up the side of the body. Stick a hand towel in there so they can rub off the skin. Leave them in there for no longer than 30 minutes and the skin should be off, if not the 100% humidity in the tub will help loosen it off and you can rub it off with the towel afterward.
Okay cool, thanks! I will have to try that after class tomorrow! Im really surprised she doesn't mind me rubbing her head of pulling the loose pieces off.