She's old, but not THAT old, sweetie. Our 3/4 Dane, Gracie, lived to be 14 1/2, which her vet attributed to "the wee lassie" being spoiled rotten, as I am sure your girl is, too.

I don't have any ideas what it could be, but wanted to let you know that part.

Would the vet let you establish a payment plan, or is there a veterinary school around that might consider doing the procedure for a reduced cost?