Maya

Maya is, in short, a normal person from where she comes from. Her world is different in a few ways... the major conception of what exists after death is not the idea of souls or ghosts, but rather the idea that all of you that Exists is a memory. If you aren't remembered, that is your truest death. As such, a common but important profession is recording the lives of other people - this scribe work is what Maya's profession is, first and foremost. She has a collection of tomes, both on her person and stashed away safely, that have the stories of countless people she's met on her travels. She tells those stories, shares those memories, so that they as a person still exist.

So when Maya drowned in a lake and became physically immortal, she unexpectedly became not only very good at her job but also extremely valued - after all, not only does Maya record your life story, she will be alive and she will remember you personally. Thus far, she's lived about three hundred years - most of it spent getting used to the whole immortality thing and figuring out her whole Deal in life.