There are many psych issues for both us and our loved ones regarding RSD. If you haven't had the opportunity to see a therapist personally, or as a couple, I think it can be incredibly helpful.

Being dependent physically and finacially can complicate the balance of power in a relationship. Utilize whatever resources you can to minimize this imbalance, if possible. (Does your state offer free personal aides? Have you applied for SSDI? Etc.)