Thanks for the chapter! 😍
It's quite possible that she is forcefully absorbing souls into herself for that entity and she is immortal so that she can absorb them forever or as a side effect of it. I remember her saying to Noah that when someone that hated her dies then they appear in her dreams.
@Nameee
All in all, she did have quite a heavy secret and she is pretty close to a which right now. So I get why she hid it all from Caidel.
@ForeverTheSky I don't think you are meant to feel any sympathy for the villagers. If sympathy was the target the author went for, then some individual faces would be shown with some not that bad people. The villagers were used as a plot device, nothing more.