A.B.
Baby teeth don't have nerve endings, so when your child bites, they have no idea that it hurts because it doesn't hurt them. When an adult bites down on something too hard, it hurts their teeth. But when a child bites, nothing. So what you might do is bite her back. Not hard. Just take the tip of her finger and bite her a little bit so that she will realize that something is actually happening when she bites other people.