She is probably going to report high very high marital satisfaction, as tending to her significant other makes her feel like she is fulfilling her vow to love "in sickness and in health". The point is further strengthen by her willing and satisfied behavior as a caretaker.
Alzheimer's is caused by cerebrum cell expiry. It is a neurodegenerative illness, which implies there is dynamic mind cell passing that occurs after some time. In a man with Alzheimer's, the tissue has less and less nerve cells and associations.