I'm not even mad that she left, like you did everything that you could to get him out of the situation every single time( ´ー`)
I keep thinking.......Isn't she dead? It's so hard to figure out what's real or not in the story...
I think she's a reincarnation of the priestess, new body with old soul.
Ah! Thank you!
She might have been the one to hold the ritual of the serpent and comatose muni. Take this with a grain of salt, merely my own speculation (;^^)>
I'm not even mad that she left, like you did everything that you could to get him out of the situation every single time( ´ー`)