My mother has been in a constant hallucianatory state since 1.5 years ago. Does anyone else have a similar experience?

I have been reading posts in this forum for a year and half now trying to find experiences similar to ours.
Here is our story such as it is.
My mother, who is now 63, had completely lost vision in her left eye about 10 years ago due to a tumor that pressed on her optic nerve. Tumor had calcified in the meantime but vision was irreversibly lost. Due to this tumor she had an MRI every year for the past 10 years. She also had a stable small meningioma in the frontal lobe that never caused any trouble.
About 2 years ago, after the family dog had died, she started to exhibit strange behaviour such as insomnia, periods of time when she would be aloof (for lack of a better word), taking longer that normal to do things around the house, constantly complaining that her vision has gotten worse in her good eye, seeing things that weren't there (that we thought were because of her bad vision)
In July of 2020 I took her to the eye doctor and that is when I started noticing a lot of issues. She would not hold her head straight and she had to be forced into the eye examination machine, lack of understanding. From here on she deteriorated fast, that very night she started hallucinating saying there are people in the house. She would be better in the morning and worse at night. Neurologists said it's not her brain and we were refered to psychiatry who said she had depression and put her on serotonin regulators and also memantine. She started loosing the ability to care for herslef, she became more and more confused.
I tried helping with cognitive exercises and this is where we realised she can't do substractions without considerable help anymore, not even easy ones. At this point she had manic states when she would try to break the door to leave (we took her key), she would cry and hallucinate. My father would call us at night to calm her down and it became increasingly difficult on everyone (my sister, myself and my dad).
After a couple of weeks of this the psychiatrist put her on olanzapine (zyprexa) a antipsychotic. She became stable and we could reason with her for a short period of time but this medication was destroying her physically. She couldn't stand up straight, lose ballance, dressing and eating became an issue.
After about 1.5 months of this we changed psychiatrists.
This new doctor wanted to try something different and put her on a newer med, Abilify. She responded badly to it, manic states, more hallucinations. He tried switching her back and that's when she went into Malignant Neuroleptic Syndrome and we ended up in the ER.
After this episode she didn't walk again, she went from someone walking 2-3 miles a day to total bed bound.
We had a neurologist come to our home who gave us a prescription for some recovery meds that we had to put into her IV. He didn't suspect dementia either. Recovery to the point where she could just barely move her hand took a long time. I did exercises with her for months and she could barely stand on the sofa.
Hallucinations never stopped, she has very few touches with reality. She knows who we are most of the time but other than that she will tell you stories that make no sense, talk about children who don't exist and places she's never been to.
I suspected dementia so brought a doctor who gave her some tests, and said it's dementia but she can't really say what type it is. She put her on Rivastigmine and Memantine.
Her mother had Alzheimer's and I suspected some Lewy Body because of the constant hallucinations.
Since then it's been touch and go, she was doing a bit better but now is going downhill again, lives only in her world and slowly losing the ability to chew her food. All the progress in ability to move has been lost in the weeks since Christmas. There is no infection so it's just progression of dementia.
I was wondering if anyone has had a similar experience?
Thank you all for reading.