Alright, I think I've got the game to a reproducible state for at least one of the crashes, and I'll post my save here. I don't think this is RandomFapinator's "loading the save" bug, but it's likely connected to Raguel's. I took some other notes on various feedback throughout the run, but I'll stick the non-bug stuff in a spoiler tag.
Alright, there's a crash. And if I were to wager a guess, I'd say it has something to do with Elli and Lucette having Shared Senses, which they received shortly before Elli got attacked and crashed. Probably not related to the other ones that were reported, though.
[Note: I keep saying "at camp" in this next part, but I mean the safe room. It's a picture of a campfire, so... Yeah.]
(Several floors later) ...Ah, now *there's* a crash that happened while everyone's at camp. I'm not sure exactly what triggered it, but Lucette and Raine were able to rest until it was Elli's turn. Hmm... I just embraced Sloth on her for the event. Possibly related?
...Yeah, another crash while Elli and Raine are at camp.
Third crash in quick succession, but this time it's while Elli and Raine had shared senses, and only Raine was at camp. Neither of them got hit, though, so I'm not sure which of the two potential bugs that one points towards.
Fourth. This one happened while Raine and Lucette were resting, but seemed to happen on the turn Elli hit a trap?
And fifth, just like the fourth. It seems to be the exact turn that Elli loses Well Rested. In any case, this seems to be easily reproducible, so I've included my save data from the beginning of that floor.
Edit: Another Shared Senses crash. Elli hit a mind crystal, Lucette got hit by something else. Doesn't seem to line up with the rest bug, so probably its own thing.
Edit 2: So the common factor with the rest bug seems to be Elli doing ??? while someone else is resting. I think. Though, the problem could also be Raine and I've just been too focused on Elli...