yorkies are not really kid friendly dogs to be honest. i wouldn't bring a new puppy into an existing home with little children. i just wouldn't. i had the dogs first and have enough worry dealing with the possibility that the yorkies won't like the new baby. i can't imagine already having my son as a toddler and trying to add a yorkie with God knows what type of personality to my home. what if you end up with a yorkie that is a sweet puppy but came from a less than perfect breeder and ends up biting your children and hurting them. it's bad enough that you are going to have your work cut out teaching your daughter to "be gentle" to the dogs, but what if it turns around on you and the dogs are not being gentle with your child. what if they bite.
the ONLY dog that EVER trie to bite me in all my experience working for a vet was....badda bing A YORKIE!! they can be stinkers. cute but stinkers. and they are super hard to potty train so you have a crawling toddler in their pee and poop messes. and you have a possible biting or aggression issue, it's all just a mess waiting to happen. i would just wait. teach the little girl to be nice and play sweetly with animals first. once you accomplish this maybe start with a mid sized dog or larger breed dog to rough house with. save the yorkies for your kid's teen years when they are better suited for little dogs. little dogs shiver and shake and are afraid of too much noise and chaos and let me tell ya toddlers bring chaos. yorkies don't like that, they will chase, bark, bite, and be scared of all of that mess. just not a good combo sorry.
good luck in a few years though. and good luck teaching her to be a nice petter
