I'm feeling for you guys right now, this is just terrible. Brings me back to when Ronin's sister ate a sock - for a second time - and nearly died. When I went to visit her at the ER vet, I thought she was a goner. But she defied all the odds and pulled through, bless her heart.
I wish you were closer to a univerity teaching hospital - I have a sense of security knowing I'm 5 minutes away from one, but I don't think you're close to one.
Methinks after this is through, you either need to find a vet clinic that cares about their patients a bit more.
((((HUGS))))