K.H.
Biting is extremely common amongst young children. They are still learning how to communicate, express themselves, etc. It's the preschool's responsibility to talk to the other parent - not yours. You shouldn't say anything, and you certainly shouldn't get "in their face." What you should do is talk to the preschool about how they handle such incidents. I am sure the other parent has already been told what happened, and most likely feels horrible as I'm sure you would if your daughter had done the biting. You can talk to your daughter and tell her to say "no" when other children [or adults] do things that they shouldn't do. I'm sure your preschool has a process for dealing with such situations.