Thats a tough one. Going with my grandmothers old fashioned advise, bite.them back. Not.hard but.firm enough they know they wont like it.
My thought, distrations. When you see her going in for a bite, change a subject. Game, whatever it is.
With my oldest who was a biter, loved to bite my.wrist.. well i rubbed it down with lemon. He didnt like that too much. 2 times and he stopped.
Pay attention to when it happens and what's going on at the time. When we have bitters at work we keep a journal for a short time to see if we can't find a pattern. Ex. He usually bites before lunch. Maybe he's crabby because he's hungry and needs to eat sooner. Biting usually happens because they can't communicate verbally so they bite to communicate. There are many things he may be trying to communicate; hunger, tired, frustrated, angry, doesn't like people in his personal space, fighting over a toy. And sometimes there is no obvious reason and you just have to shadow the child and prevent as many bites as you can. What we do when they bite is sternly tell them that is not okay and remove them from the area they were in/person they bit.
Those are both good tips. Keeping the journal and the lemon juice.
Hmm Kendrick hasn't gotten to this stage takening mental notes