She ended up having to go to the hospital, because she needed stitches in her lip. She took multiple pictures and printed them out, though her lip is only bruised now. Also, she has pictures of the bitemark; however, it's faint. About the "certain cop on a good day" is what I thought. So, she's pretty much screwed if she actually takes action against him?

I/her really appreciate your honesty. Thank you.

I apologize for spreading these out.. Would he definitely get into trouble, perhaps more than her, if she files?

If she had injuries as you described, she should file charges.