[gemy]

As the breeder I would hope that you still want to try to get to the bottom of how "your" lines produced such an atypical Yorkie.

DNA parentage test should be done to confirm Minnie's parentage.

Beyond that I hope that you have learnt a whole lot more about the breed, before you dip your toes in again to breed.

Also you should at least gather enough knowledge of the breed to understand if you have an atypical Yorkie pup; and settle things way ahead of time prior to offering for sale a Yorkie pup.

It is never easy and or "cheap" to breed the right way; and that starts with getting a mentor with a great reputation+experience and usually uses one of the three main registries in North America.