One entry from Tsuto's journal, before the last erotic drawing of Nualia that shows her with horns, fangs, a barbed tail, bat wings, and demonic claws for hands:

My love seems bent on going through with it — nothing I can say convinces her of her beauty. She remains obsessed with removing what she calls her "celestial taint" and replacing it with her Mother’s grace. Burning her father’s remains at the Thistletop shrine seems to have started the transformation, but I can’t say her new hand is pleasing to me. Hopefully when she offers Sandpoint to Lamashtu’s fires, her new body won’t be as hideous. Maybe I’ll luck out. Succubi are demons too, aren’t they?