I went through it with my grandmother. It was dreadful.
Same deal here, only in our case my maternal grandmother was mercifully carried off by a stroke before things got really bad.
My grandfather 'lived' with alzhiemers for 20 years. He was reduced to a juvenile delinquent with no memory at all. Very sad.
He had been a genius mechanic, machinist, and farmer. The only thing holding him back from wealth and industrial empire was a total lack of business sense. He failed at any number of ventures, but I admire his memory because even though he always failed, he was never beaten until his own mind betrayed him.
He was at least able to provide his wife a good living from various pensions and royalties, which included a WW1 veterans pension.
My deapest sympathies.
I went through it with my Mom. She passed away in '02, I was in my 30s at the time.
So hopeful this treatment is successful. The long drawn out emotional pain suffered by the victim, family and friends is "dreadful" to say the least.