I don't know why but I do that a lot too. Letters, old messages, photos, anything that reminds me of others.
They don't do things like these but I don't know why I do. I'm so attached to the memories of people.
I go back to read messages of the time when they made me feel happy or a cute photo I liked of them.
I have more pictures of others in my gallery than I have of mine.
Sometimes, I really wish I wasn't this sensitive but I can't imagine myself without it.
Anyways, aunty please keep writing. I've known you only for a while but you seem so kind to me. I just have a feeling that you're such a nice person. I hope happiness always comes your way.