Just make sure she knows that although biting is bad, it's never bad to defend yourself. My mom always told me that if ever someone hit me that I had every right to hit them back
LOL. You sould also as your daughter if she really even bit the other kid. When I was in preschool, this girl bit herself and then went crying to the teacher and told them I did it. They called my parents and and my parents threw a fit at the school because they later saw the girl bite herself again to keep the marks fresh.