Biting and nipping is normal for a puppy and only a stage she is going through. Even so, you want to correct her each time she starts. The best way I know is to quit playing with her and turn your back to her. If you ignore her she will eventually learn that nipping and biting is not a game you'll play. Sophie did it at that age and now when we play she "play bites & growls". She pretends to bite but doesn't clamp her jaws and her growl has a playful tone when we play tug. I started Sophie in training classes three weeks ago and I highly recommend these classes not only for training but for socialization. Can't wait to see her photo.