@Cynthia12 
You have my heartfelt sympathy. My husband's mother had Alzheimer's. Mercifully, she, too, was never mean or angry; she became more like a slightly sad, confused child. It's hard enough to watch someone you love slowly disappear with this disease, without being the target of anger that you don't deserve, and neither you nor they really understand.
My mother's funeral was at their church on Wednesday afternoon. My parents had reserved space at a veterans' cemetery, and since you wait on
their convenience with the military, she was actually laid to rest yesterday (Thursday). The pastor of the church has leukemia, but he is determined to continue to serve as long as he is able. He is receiving transfusions about once every two weeks, so his energy level waxes and wanes. The day of Mom's funeral, he had had a graveside service for another member that morning, and the heat really took its toll on him. Standing in the pulpit to deliver Mom's eulogy took almost heroic effort on his part; none of us would have thought ill of him had he delivered it sitting, but he thought the world of Mom and he was like, "this is how it's supposed to be done; she deserves it." My father (who is a retired minister) read the commitment at the cemetery yesterday; it's a short service, and he told Madison "we aren't going to drag you out in the heat for that. You rest, you've done more than enough." God bless you,Madison.