I am so glad that you are going to try to get her to get along with your Yorkies. It does take time for the dog to adjust to new home. Cesar rocks! I love the way he works with the dogs! How do your dogs do during the walk? I don't remember who said it but walking is the great way for the dogs to bond with each other and burn the energy so that they will be more calm.
I hope the progress will get better and better!