For purely thematic reasons I'd like to request the Endless trait from Dragon Magazine #354, page 52. I would of course grab the Wedded to History feat on page 54 and go with the Apostle of the Forgotten "background" for it.

I was thinking that she could be the only person alive that remembers the God of Death that ruled long before Jergal and that her wish is to see that god return to its rightful place, which she wants to use the Noctuary to achieve. I think it really fits with the idea of her being this ancient and frightening portent of death and the idea that there were older gods than the ones remembered in Faerun is kinda spooky.

Whether it'd be a good thing or not is another matter entirely, given that it could very well be like someone wishing to free the Titans so they can overthrow the Olympians.