Lizzy has more lives than a cat. We returned to the vet today and she was pleased with the progress Lizzy is making. She did tweak her meds a bit in order to keep her on steroids longer, but things are looking good for the little yellow dog for now.
The vet thinks it is a degenerative problem, so, without surgery, we're likely to see more of this in the future. Surgery isn't exactly an option (plus there are no guarantees with it anyway), so I guess we'll just have to take things one day at a time.