I don't think Gail intended to give you a hard time at all. She was just sharing some of her
abundant knowledge. I understand why you would be sensitive about the topic though, and I am very sorry for your loss.
I have three australian shepherds. I am not sure if they have similar temperaments as australian cattle dogs, but they are both herding breeds. My big babies love Wobie, but sometimes they are more rough with him than they mean to be...but that can happen with any dogs with a big size difference.
I agree with others that doing obedience training with her first may give you an idea of how well she would work with a little yorkie. Good luck with your decision, it would probably be best to not rush into it before Christmas. And welcome to YT!