Hi she may also be sore in the mouth if puppy teeth are on the move we used to give Daisy our lab cold raw carrot out of the frige it soothed her gums but also meant she could chew something hard to eliviate the desire to chew , it made a mess to start with bloody carrot everywhere, but she soon began to eat them too and now they are her favourite treat better than biscutes any day .Ignoring the bitting is ok to a point but you must tell her NO or NO BITE every time dont laps and let her sometimes and wonder why its not sinking in,
Andrea