Stephen, Welcome to YorkieTalk and Contragulations on Fitzy
What an adorable pup! You are a saint for rescuing that poor baby from the evil PetLand. Perhaps in time you, your Mom and Fiancee can agree on rules for Fitzy that everyone can follow.
It might help if you include them in the deciding on the rules. Women don't like it when men make all the rules and then try to enforce them. That is a hard lesson to learn.