New Granny
Grannies we love are old people and old people are those people who sometimes get sick and they may die because of the diseases or because it is their time came. They die and we miss them and we still love them and we will always remember about them. Just because they are gone of this world it doesn't mean that they are gone of our hearts.
They will always remain there and no one will replace them. Though, let's think about those people who are left alone. They are grandfather who are left alone when grandmothers are gone. Children have their families and grandchildren have their friends but grandfather have no one next to them and they are lonely and they are all alone in this world.
So, they usually find a new granny and they are happy about this fact. Sometimes, most times actually, children and grandchildren are not pleased with this fact and they sometimes are irritated about it. Though, it is selfish. They have to realize and to explain their children that there is nothing wrong in grandfather have found a new granny.
It doesn't mean that he have forgotten your granny. But it means that he is lonely and he is afraid of being all alone in this world and at the house. He needs someone to care about him and he needs someone next to him. So, do not be selfish.