you ar such a strong man. you are going through this much and you are still able to put smile on people's faces. please be strong. there is hope, optimizing her should not be a problem if she can stick to her medication and diet.
I believe she will get better.
Alzheimer's is a disease of the old. My grand mother had it and she lived for more than 20 years with it.
Be strong , her health will be restored. At this point she needs you more