I don't know. Have you tried sleeping a night yet?
Or did you play the scene where Ravorra tried to escape already?
If yes, see if you can find some way to replay it. Maybe that helps.
As far as I got it, you need to press on with Ravorras "training" for one level before you can get the next stage of Zarias Quest.
You also may simply have to wait (which means: Sleep) once or twice from time to time for the quests to progress.
In addition to that: In order to get the bad end, you will have to plan so that zaria is revived at the earielst possible moment, before Ravorra is fully "trained". For all the other Endings you'll have to make sure Ravorra has finished all her trainings ( and ideally then some more) before Zarias final Quest. Especially the "Broken Ravorra" Charakter seems to be a bit faulty, so It wouldn't hurt to give two or maybe three extra lessons even over her maximum XP of 175.
Maybe I will publish an extensive complete solution to all the riddles and mechanics ingame one day- depends on how much of my free time I have the nerve to invest in this - admittedly a bit shady - game...
Ok, I've got the first of the puzzles that are needed to bring back the unconscious Zaria after defeating Ravora.
Now I'm Stuck with the second one- I'm sitting in a room with a treasure chest in the middle, three not working buttons at the right wall, an organ in the background and a closed door. Does anyone know how to move on with that riddle?