Thank you for all of the things you are doing for this little Yorkie and the owners. It could be something terrible happened and the owner is very ill in the hospital with no one to help her find her baby right now or something else very traumatic. I would keep checking everywhere with officials as much as possible and make sure they retain your information to contact should the owner respond.
One thing I might mention about Yorkies - they tend to have bad dental problems so they need to have their teeth brushed daily and regular dental check-ups and cleanings as people do. And most of them cannot handle fatty human food, pork, etc. Some are prone to pancreatitis and other problems so you might want to search and look for the medical conditions they are more subject to developing. I wouldn't use a collar and leash as they can develop collapsing trachea. Regular vet checks and tests can catch any of these things early on. Yorkies can be very personal dogs and will attach to you very readily and adore the lap time.
They tend to be true terriers at heart and usually react to potential prey such as a cat or squirrel with bolting right after it without even thinking so you always have to leash them when out of a fenced yard and expect them to react first and think later when their chase instincts kick in. Never leave a Yorkie outside unattended - they are prey themselves to hawks, large cats, dogs that jump in your yard, dog thieves and don't tolerate hot or cold weather at all. They can escape through the tiniest enlarged place in/under a fence or gate. That's all I can think of right now.
Again, thank you for working as hard as you can to reunite this baby with her owner and giving her a home until and if he or she is never located.
__________________ Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |