Oh goodness Ann, I haven't been on the site for a while as we were away in Sussex in our van, so I wasn't aware you were having problems, I'm so sorry and hope that it all gets sorted very quickly. I'm sure the hydrotherapy should help you, I know it was what really got my knees moving properly after each TKR. Can you start to use the pool on your caravan site? Try to get hold of a 'noodle' and an arm band for your ankle - both pieces of equipment really helped with my exercises.
It sounds as if you are being very positive about it all, well done, you are coping well with yet another difficult time.