I've read this thread in it's entirity and I guess I feel compelled to share my thoughts.
I believe while reading all the "he said", "she said", emails, camera uploads, photos, alleged lies and snippets that we've lost sight of the most important thing....and that would be the happiness of this sweet little Yorkie girl.
Can the two of you find a way to make this a happy ending for her? Perhaps the buyer and the seller can put their differences aside for the sake of that sweet little girl and find her a home she will like? After that is done, then the two of you can settle your differences (shipping costs, vet bills, monies paid, etc). Just a thought...it's not meant to offend anyone. I guess I've decided to not side with either the buyer or the seller. I'm siding with the dog....