My sister has worked in the senior care industry for years, and she pioneered the "senior move management" industry, which is focused on helping seniors (many with early stage dementia of one kind or another) transition from the "family home" into some sort of assisted living situation. There are a LOT of resources out there for you to pull from... to learn how to deal with her anger outbursts, how to negotiate with someone who isn't "all there", what to expect, how to redirect when you see things going to a bad place, etc. I'm sure Google is your friend here, but if you would like personal advice, I can connect you up with my sister who can give you specific, actionable, high-quality information and advice. PM me.
Thank you for the offer. I have spent countless hours talking to people (the Alzheimers Society, Community Care, doctors), reading, watching videos, etc. but had never heard of Senior Move Management. I am going to look into that more.