Jaime is a place as well as a person, but as the (w)hole in her chest grows, she is due to forfeit her soul and leave behind a place of pure love, where others can find healing and nurturing. So in the end, Jaime will no longer exist and Teo will become her light in the sky, and Bernard will be her night, watching over the lands she leaves behind. In retrospect, the two boys were always unusual as far as guardian spirits went; they felt especially ethereal, untouchable, and extremely loyal to Jaime. I realized later that they were soulmates to her love, and they were helping her along the path to Transcendence.
Although I didn't create Jaime with this intention, she became my vessel for exploring the idea of love at its purest. She commits herself to becoming this embodiment of love, which is unfortunately the antithesis of self-preservation. The closer we approach perfect love (ie "God"), the less we retain of our individuality -- and I think that's why we can never be "God." We would no longer be ourselves. Also, I don't think we could physically survive if we gave so much of ourselves away, which is why Jaime needs literal life support from Teo and other resourceful spirits. Carrying a Whole into completion cannot be achieved by mortal means alone.
I was a bit surprised at how the story kind of wrote its own ending and I'm also a bit morose about how bittersweet it is. The soul usually gets reincarnated into its next life but she wouldn't be able to do that either. She'd just be gone, never to meet or experience another soul.
Anyway, I still have a lot more to say on AWC (and more to draw), but this is the endgame trajectory for Jaime and her pals.