We saw the vet this morning and she confirmed the diagnosis. She didn't even need to do a scope, and brought in the senior vet to confirm her thoughts.
We explained the entire situation, discussed the surgery option which was ruled out. We are starting with 10 mg 2 times a day of pregnizone and we'll see if that helps any.
Really sadly, they basically said we just have to do our best to keep her unexcited (she's a lab on proin... god help us). And keep her cool, as it seems the heat really sets off episode, but basically that's about all we can do for now.
I can tell DH is really sad about it. He's had Casey for 11 of her 13 years, and well i don't even want to think those thoughts.
On the bright side everyone loved her and she was very happy to get out of the house.