(I think) I advanced Violet's quest too far and the demoness' quest not far enough, which (I think) caused this. I managed to circumvent it by wearing the succubus ring
Getting a bug on the latest version, every time I wake up after being sent to bed by the mistress, Celicia's body is missing and there is no options where leave and call would usually be. I teleported using the magic mirror and Celicia was still missing
