About a year ago, I had a fascinating discussion with a lady who had been studying Dementia for several decades. She told me that, as of the time of our discussion, there were known to be 87 distinct forms of the disease and that more than one can be present at the same time in an individual.
Overall, it is arguably the worst disease that humans have to deal with.
Both of my parents had it, in different forms, and in both cases it was an absolute nightmare for the whole family.
It really does rob a person of the self-identity that they had before the disease began to afflict them.
I do hope that Nichelle's remaining time can be peaceful, at least. She needs understanding loved ones to be there for her.