Your story is one of perseverance and courage. Your wife deserves a spa day - possibly you can talk with one of her friends and arrange it as a little surprise. I would also suggest you take a few minutes to write her a thank you note. My husband required a lot of support dealing with the chronic problem he had and I treasure the note he wrote. Not that he didn't tell me thanks daily, but the note took special effort and I knew it.
Keep up the forward progress and the therapy. Surround yourself with positive people and efforts. I wish you success.