In lieu of a vet and in any case - keep up with the hydrotherapy - the mild warmth and exercise may help with the swelling. Good to use Epsom salt compresses. And T-Relief or similar. A little massage from the foot toward the belly if she and you can stand it may also help. There is an anti inflammatory called Rimadyl to consider - may need a vet prescription, I am not sure. Vitamins with electrolytes twice a week, I would try that, to, just for healing support. How are her spirits?