Welcome to YT!! Congrats on your new furbaby. It sounds like she is doing well. Mother's and siblings usually teach the bite inhibition, which is why yorkie puppies stay with mom until 12 weeks old. Since baby Paris Pancake is already home, it'll be your job to teach her those sharp little baby teeth can do some real harm. You can squeal to let her know it hurts or you can say ouch, turn your back or get up and walk away so she will eventually learn that bitting, or play bitting, gets her no attention. It would also be a good idea not to take her out yet. She's tiny (age wise) and doesn't have full immunity yet. It is recommended by the great breeders on this site that you wait two weeks after a pup's last set of shots for full immunity. I hope this information helps!!!