My little boy did that too. It took about 4 to 5 times, but eventually he got used to it and now loves having me poor the cup of water over his head. I started making a big deal that it was fun and rubbed my hand over his face to get the water out of his eyes, then took part of the towel and asked him if he wanted me to dry his face off, and I pat his face with the towel to dry it and make noises while I'm doing it. Also, he likes to look at the cup I use to wash his hair, of course he calls it a "puc," but ever since he found out what it was that was pooring the water, he didn't seem to mind. Let her inspect it and tell her what everything is and that it's getting her clean. It seems that when you explain things, they don't mind so much.