I'm sorry to hear this, Mushu definitely forgot about the "pee" after an hour, it's pointless to hit him or push his head near the pee and tell him he made a mistake, I would make mum understand this, and plead her not to do anything if it happens, and let me handle it..
I seriously hope nothing worse will happen to him, yorkie is so small...should be treated gently. In fact, every dogs should be treated gently
