I agree with the above posts. That is "his" dog. I had the same thing happen to me when I was little. "My" dog when he was a puppy was chewing up everything that was mine. I'd come home from school and something of mine would be destroyed. I was soooo mad at that dog. I kept asking why. Well I got my answer. My mom's b/f said that he was "my" dog and if I wanted it to stop I'd have to work with him. So I did, and the funny thing was he turned out to be the most awesome dog. But then he wouldn't listen to anyone but me....lol. Your dog has chosen her person.