I knwo this might sound werid but they say that a dog goes threw a terrible two's just liek people .Now I didn't want to say it before because I probly sound stupid saying this but in a book I read it said that most dogs go threw there terrible two's at the age of 12 or 13 months. About your pups age. You will loose everythign you have done with her in the past year or so. So this is my guess that she might be going threw her terrible twos. Sorry if that sounds stupid but. O well...from my reading that is my guess off what is happeing