Just stumbled on this... maybe a month ago, and have been playing around with the non-backer version to see what it's all about. Using the Mac version, if it matters. Started with 0.2.39, and started a new save in 0.2.40 just recently. In my first save, I wanted to see the tentacle scene, so post-Helayna I gave Alexia up and let Andras punish her, and everything went pretty much according to the scene list in that google drive guide. In the new save, I decided to try the whipping scene and went easy on her. I rolled poorly, so Andras threw her in the dungeon with the wulump, which is fine, but for some reason the 4th week event (AndrasxAlexia) isn't triggering. I tried reloading from an earlier save (2nd week wulump event), but after skipping to the 4th week to test, it still didn't trigger. Is this intentional or a bug? Further details: immediately after the 3rd week wulump scene, I can assign Alexia to a job again (which I don't believe you can during her imprisonment). There's no dialogue at all concerning her release or reaction to her stay by the 6th week after her initial imprisonment.
If this has been brought up before, I apologize; I tried going back through the beginning of January to see if it had been reported before and didn't find anything that seemed immediately relevant.
EDIT: Just went back to an earlier save on the same new file and chose to let Andras punish her instead of punishing her myself, and yep, the 4th week dungeon scene still played normally in that path, so it seems like the absent scene is limited to choosing to punish Alexia yourself and failing to make it convincing if you choose to take it easy on her. Is this supposed to happen?