Unexpected caregiver: Adult daughter high needs care due to accident

Back in 2010 I lost my parents, 5 weeks apart and our family dog. In 2012 our adult daughter fell down a spiral cement staircase and broke her neck. We flew to be by her side until she could be returned to Mayo Clinic. She was 31 at the time and a registered nurse. She recovered in a few months and could almost walk again by herself but her progress faded ? Stumped Mayo doctors and she regressed backwards. Many tests every 4-6 months could not pinpoint any cause for this. Eventually she was in a power chair with limited mobility. She went to therapy and tried to get back to where she was. In the meantime, we might bed her out of her apartment and back in with us. It was difficult. Eventually she moved out to a place without stairs and had a boyfriend and 2 small dogs that she cared for. She was needy and it was difficult to deal with it all. We also had a son who we had around as well. Then 6 years passed and she was on a trip with her boyfriend when she had a thunderclap headache, her right side drooped and she was ambulanced to a hospital in Florida and then airlifted to a larger facility. We flew there and I stayed 3 1/2 weeks with her as she had a brain bleed and a major stroke. She could not talk or walk. Her right arm was paralyzed. She finally was flown back to Mayo Clinic where she underwent speech and physical therapy. She resided in a nursing home for a year, then an assisted living where she needed a lot of care as she was a total lift.
Then she moved to another facility closer to home and then another facility through the county. During this last time we moved all of her belongings to 3 large storage units. Sold her car. Took care of all her financial dealings, power of attorney, her dogs, county requirements, taxes, etc etc etc.
We inquired about groups of others that could relate to what we were going through. She now is 42 and in a power chair. She could only move her left arm/hand after the accident but now that hand is crimping up too. She can’t sit up, stand up, or do much to help herself but her mind is like 80% with it. We are now old and have health problems to deal with.