Tell your mom that of the possibly 40 dogs in a shelter, not all of them are going to be saucy. Most of them are very sweet. Another excuse not to go is because obviously the dogs were put there for a reaon -- but most the time, the reason is not the dog's fault! It's "he got too big" or "she sheds too much" or "he won't stop peeing but I don't want to get him neutered" or "I leave him all day in a fun room, yet he STILL chews on everything!"

Just tell your mom that the dog you'd be buying from the BYB will have pups much worse than saucy -- unhealthy pups.