I just wanted to clarify, in case it was taken in the wrong light, by no means do I think Breny is a bad breeder. I also think the OP went a little far with the title of the thread to so firmly say "Don't buy from...". I should simply have stated that this is a review based on his experience with Greens Treasured Yorkshire Terriers.
Indeed, Breny is not bound legally to do anything about Lucky's veterinary bills as is stated on the puppy contract on the site. And being that the puppy was not "
sold to a third party" but rather
given to his mother, and by his claims, he had notified the breeder of his intentions prior to or at time of purchase, technically, there should not have been any breach of contract in that respect. The only problem is, OP should have insisted on a modification of the contract to reflect his mother as the owner and him as the representative signer and purchaser. So the only other issue here is the clause stating "
[i]f this dog is determined to have a major health defect, he/she may be returned to the seller for an exchange, (no cash refunds) at that time.". I may have overlooked it, but I could not find anywhere in the contract stating a time expiry of the health guarantee. That is great. Normally, I see a 1 or 2 year health guarantee only, and of course, from the more reputable breeders, there are the life time guarantee against congenital defects. Here again, the owner/buyer needs to provide valid proof if he expects any kind of action or resolution from the breeder which, according to contract, would only be to replace the pup with another one.

If she chooses not to subsidize part of the cost of surgery and/or refund partial or full cost of the purchase price of the pup, that should not be reason enough to direct people away from buying from Greens Treasured Yorkshire Terrier. As the buyer, you read the contract, you agreed to it, you signed it. You can only kick yourself for doing so if you had reason to suspect you'd need to have your breeder go above and beyond what is stated in the contract you agreed upon.
But as an onlooker and general consumer, I would hope that the seller would be morally bound to do what is fair to both parties and the pup involved when it's all said and done.

Of course, again, Legg-Calve-Perthes Disease has not been proven to be a genetic cause. So what is fair? I am not one to say either way as I really do not know, that is why I find this thread informative and it gives me something more to think about. I, for one, would be one of those who would just deal with the problem myself and move on, and much more later think about whether or not my breeder would appreciate being informed of this condition my pup had found itself in.