[capt_noonie]

I agree, if she came from a good home and just accidentally got out somehow, the family would be frantically looking and posting. You would have heard about it by now. The only other thing I can think of is that someone ELSE stole the dog, took her away from her city and found out she was pregnant, then dumped her then the OP found her. Yorkies can get extremely matted in just a few hours out by themselves. She looked so tangle free.

But I think what you are doing is right. If no one comes forward it was meant to be.

I also agree with the spay/neuter clinics. They don't do pre op bloodwork, and since you don't know anything about this little girl, you won't know how she will handle the anesthesia. There is a lot of varying costs with vets. Call around and see who can do it for less. Bloodwork is usually around $100. Spay usually $150, and meds too. If you can't do it all at once, have bloodwork done a few weeks ahead. As long as she's not sick, the results should still be good until she goes in for the spay.