Daisy just bit my boyfriends son. Took a chunk of skin off the nail and was bleeding pretty heavily. She has nipped before, but never bit like this. He's terrified of her now, obviously, but he hasn't played with her much in the past 2 months or so. Is it that she isn't socialized with him anymore? She never acts this way with us. I. Nervous that this is a new behavior and want to be able to trust her, but certainly can't trust her with children. It didn't seem to be provoked either. Any suggestions?