Crappy situation, sorry you had to be in the middle of it trying to educate and getting nowhere. At least you had a breakstick, ugh!
I had to do that with a few people. Most recently with the boyfriend's brother. You can do only so much and can only make them listen if they are willing to. It really sucks that it will be her fault for setting her dog for failure but in the end the one that is going to be punished and blame is the dog. I wish people would research and learn about the breed the chose to own before they buy a dog and not after when they are having problems.
Yeah, I feel for you. Some people will never listen. A friend of Stan's was keeping his female and two young males in a pen together. I kept telling him that he needed to separate them, because they were getting close to a mature age. I told him it was very possible they'd end up fighting. He said, "Naa, they are brothers." His female came into heat. The two males fought pretty badly. He came home from work, and called me. I told him to bring his female over, so, that I could keep her in the barn, and told him to separate the males. He brought the female over, but kept the boys together, he thought they wouldn't fight since she was gone. The boys got into another fight. He calls me again, I told him to separate them and set-up some proper chain spots. I had to set them up, but he had the nerve to say, "No one told me this would happen." What?