I've sent Yaz by PM some information on a couple of fund raising organizations that help people who need asssistance with pet medical bills. Hopefully she will get some help, which combined with help from the breeder may defer enough of his medical costs that he can stay with his family.
If I were the breeder of this puppy, I would sell a puppy from my next litter, use that money on the puppy's medical bills, and/or put the puppy up for sponsorship from local businesses to help with his medical bills.
I would help the puppy people, but I would not take their puppy from them.
NO way.
JMO......