Annie and her Granny - About the Life at the Beginning and at the End

Annie is born into a world where like most of us she meets her Granny. She plays with her, she learns from her, they talk together and they even share their secrets together. As Annie grows and comes to know the world, Granny slowly leaves it. Annie is there with Granny right to the end and even plays with her afterwards. Now how does she do that?