There were a few yorkies in this rescue:
Small Dog Rescue and Humane Society , but they might all be male. I do see a 4 year old female silkie.
You might want to check out
Atlanta Pet Rescue & Adoption too. We rescued Lane just before Christmas, and it seems they have unfortunately had an influx of yorkies lately.
Ah, just saw you'd prefer if she was housebroken. I would NOT recommend one of the puppy mill rescues in this case. That being said quite a few of the rescue groups do have owner surrenders, etc where the dog is already housebroken. Good luck in your search!