Sorry to hear that, about your family members.
You could be right about the cause or the results you mentioned.
I’ll be spending three days next month with her 24/7 at a retreat we’re all going to in the Mountains. I intend to ask her some very defined questions as she isn’t not incapacitated from communicating. Just has brain fluffs now and then in conversation....she writes many things down now as she forgets what she knows she otherwise knows.