tough situation, It`s not only hard for children to undertand but also hard on everyone involved to truly understand. It`s hard to be so close to someone for years then al of a sudden someone not even remember you. For you to have gone through what all you have and still stay strong shows a lot of character. Just stay strong and know that this disease is harder on you and your family than it is on your great grandmother. You and yours will be in my prayers.