[Alisteretc]

I agree that from now on when those 2 are together, you will have to be right there, and that Sophie must think she is in charge and needs to control everyone who disobeys or seems like a threat. The alpha females will usually target the most passive. I do know someone who actually bit her dog's ear when she decided to fight. She did it just once and the problem dog has never gone past the line again. I think you have to catch the dog right when she attacks, roll her say "no" firmly, and hang onto her ear with your mouth while growling, and while pinching it with your teeth just enough for her to realize what you are doing. I have never done this myself, and I know it sounds really odd, but it DID work for her with her chi.