Sheila Maxwell doesn't do any health testing. And I also know that dogs that she has breed have been in rescue, so she doesn't take back her dogs either.
When I personally encouraged her to DNA test before breeding, her response was "I have no Fanconi in my dogs, I do not need to test"
Classic head in the sand, because if you do not test you do not know. That alone is enough to be negative. And please note, on her Puppyfind listing it says that these puppies are ACA registered, not AKC (American Kennel Club) which along with UKC in the US are the only "real" registery
So there are lots of negatives on this breeder and for that matter any breeder that would just take your money, slap a puppy on a plane and ship it wherever to me is someone that only cares about the all mighty dollar.