I am very reluctant to post this but I am going because for some reason I think you also see that Minnie appears to be a mixed breed. I post the following with respect to you, but my opinion;
DNA on your Sire and Dame are probably a really good idea along with all the tests that should be done on a breeding pair (a breeder from Yorkie Talk may have already stated those tests). I am not sure I would be 100% comfortable with just pictures from your breeder, the tests are also needed.
From what I have observed from my years on Yorkie Talk breeding takes a lot of knowledge of the breed (along with love for the breed), an experienced mentor, a GREAT relationship with a Vet and most importantly a lot of time with your breeding pair and potential puppy owners.
Hopefully if you decide to have another litter of babies you have at least some of these covered. From reading this thread you are very lucky that Minnie has a good home who loves her.
Good luck and perhaps asking your breeder some additional questions will help you and Minnie's family resolved this.
Disclaimer: I am not a breeder, never have been and know I am do not have the knowledge to even consider breeding. My dog is a pet.
__________________ Cheryl,Mom to  SophieKate |