Dementia | seek opinion. She uses it.

My grandmother has dementia of which the 1st diagnosis was done 3.5 years ago. I have attached the screenshot of the diagnosis made. There has been no other scan done since. Her condition has deteriorated in past few months. She is unable to perform any task on her own at present including walking and eating. She speaka seldom and that too out of context. I understand that dementia is a progressive disorder. However I just wish to get an opinion on her current treatment and understand  if anything else can be done to improve her condition. I have attached the list of current medicines she is on. I also want to mention that I have noticed significant tremors in her hands sometimes. I read about it and I think it fits 'essential tremors' definition more as her hands shake only when she uses it.