@Namorax
Spoiler level 1: How it initially gets "resolved" (shouldn't be too much longer till this happens.)
Spoiler level 2: More details about the Consuming / Devouring and how spoiler 1 deals with her sickness
Spoiler level 3: Why she's able to do spoiler 1
There's more but I think that's more than enough for now.
Spoiler level 1: How it initially gets "resolved" (shouldn't be too much longer till this happens.)
The temple has connections to nobles, so she's pretty much forced to enter the temple and become a priestess in training.
There are 2 priesthoods in the temple. The grey priesthood consists mostly of peasant orphans, and they have no mana. The blue priesthood mostly consists of nobles who don't have enough mana to do the work required of nobility. The temple uses their mana for various rituals and ceremonies, and have magic tools to drain mana.
There was a coup de tat around 10 years ago that killed off a ton of nobles, and as such many of the blue priesthood were pulled back into noble society due to a lack of nobility, so they're really hurting for mana. They really want mana from pretty much anyone even if they're not of the nobility i.e. even peasants with the devouring.