How do we deal with my mother’s delusions? She is lucid in most other ways but is convinced that the people she sees are real.

My mother is 79 years old and has a complicated medical history which includes heart disease, diabetes, early stage kidney failure, hearing loss, and narcolepsy. With all of that, she is actually I. Surprisingly good health. In late a November or early December 2021 she started mentioning hearing “buzzing”. This turned to music and then progressed to voices. She went through neurological testing but nothing was found. At this time testing did not work Ben qualify her for an official dentist diagnosis. Her hallucinations began as “friends” but then progressed to more paranoia. In May she had an episode in which she tried to leave the house to find the people and when my dad tried to stop her, she attacked him. As a family we agreed to have her admitted into a geriatric psych facility hoping that they could find some reasoning for her hallucinations. She was hospitalized for about 3 weeks during which the first two weeks she was coherent and lucid. She knew everyone who came to visit, kept up with date and time, and knew where she was and what had happened. However the hallucinations were still happening. The first plan of care was to take her off as many meds as possible thinking that perhaps she had medical psychosis. After 2 weeks they increased the psychiatric meds and when my father went to visit her, she was barely coherent. They discharged her home to hospice care and on 4 different psychiatric medicines. While home mom quickly declined from shuffling and needing 80% assist to needing 100% assist. She was not swallowing, she slept most of the time, she didn’t know who we were. She presented as if she had late stage dementia. We found out that in the hospital after one dose of seroquel the meds were discontinued because of of “lasting sedation”. The hospice team agreed to take her off all psychiatric meds and, after about two weeks, she started showing progress. And she kept showing progress. She is now almost 100% Independent. She has very mild memory and cognition loss. I’m a speech therapist and administered two tests to which she scored within normal limits! During her recovery she remembered the voices but said that they “must have moved” but apparently it has started again. Mostly, she is convinced that there is a woman who is after my father. She refuses to let him be at the home by himself. If he is working in the yard she has to be out there watching him. She thinks that he hears the woman but doesn’t claim it. She questions everything he says or does. He took such good care of her and he wants to continue to, but it is wearing him (and us!) down. She gets mad if we don’t believe her and she will refuse to do things like go to town with one of us of he is going to be at Home by himself. My dad, who is 80 is in excellent health, but is as stubborn as the day is long. You can imagine there ar swine clashes! Mom is so lucid all go the other times that it is hard to just say “it’s just the disease”, but, per our story you can see why we are hesitant for medications. She is still on hospice care (for now) so she hasn’t been to a physician in a while. I’m reaching out because 1. We’ve not heard of a case quite like hers and hope maybe someone has experienced something familiar and 2. We just want to find some strategies to help my sweet dad cope.