I know that everyone already poked the idea of Twilight overliving her friends. I know that everyone already poked the idea of Twilight overliving her friends.
And now am I come to this point. She have realized what's the most scaring thing in losing the ones you've cared for: in time you realize that you starting to forget their voices, their faces... You can't realize it at first, and finally you found yourself at the point when it's too late to savor every memory you had left.