Has anyone dealt with a high functioning loved one with a diagnosis of likely Lewy Body?

What do you do with a high functioning dementia patient? How do you make decisions for them when they are so opposed to being managed? My mom's behavior led us to secure guardianship and place her in an AL. Under care she has improved greatly and wants to return home. The doctors and myself will not clear her for this. To many people and family she appears normal, so there is plenty of pressure to make changes for her. I still see the issues even though she is well managed now and well medicated. She is very verbal, very active, seems clear, yet I still see the underlying confusion, the struggle, and the delusions. The hallucinations have stopped I believe. Many people feel she is cured or misdiagnosed. I will admit with pressure I can doubt the diagnosis and the prognosis too. I do not regret the steps I have taken though, it has given her safety, some normalcy, and me plenty of peace. However she would like to go home, and I was about to sell her place. What is the likelyhood she will ever live alone again? The doctor says no chance. He is reluctant but willing to repeat testing at our request. This is all very hard and confusing.