I'm so sorry your baby is going through all this, and you too
I would think that as a show breeder, she would want a GOOD reputation. At the very least, she should refund you what you paid for him as a show of good faith. It would probably not make much of a dent in the medical bills this poor boy is going to rack up, but it would at least be something.
Hugs and healing thoughts for you and your little guy
