I remember reading about a man who healed himself of Alzheimers. I can't remember who he was, my mother lent me the book a few years ago. He did lots of memory excercises, learnt pages of the dictionary, he took omega 3 oils and he drank Rosemary tea. I know there were other things he did and it took a long time, but he did it. It a case of 'use it or lose it'. Rosemary tea musn't be used if there is high blood pressure though.
I will pray for her. God bless you all.