well puppies bite
and when they are around other puppies.. those puppies bite back to let the other guy know.. hey that hurt... but your poor Jeter is such a kind little guy.. he won't put her in her place... so she just walks all over him
i wish i knew what to do... i only know that (well from experience) if Jeter ever nips at her or growls to warn her... dont' get mad at him... he is letting her know that he is in charge and is not enjoying the biting! that should make her stop.