That sounds like a weird ass trigger
My current theory is that it triggers nighttime after your clothes get damaged in battle enough that Karryn starts walking around naked, I don't think they would link it to number of encounters specifically. It's possible but right now I just don't have enough info and I'm not a smart person that could just look into the files and determine what's the cause. Hell, I wasn't even expecting this to happen.How do you get ambushed?
Simply exited the room with stairs to floor 3 and the regular rooms were now full of inmates like they are during riots etc. Also noticed that you can't enter the reception anymore (says it's closed for the day), still can enter toilets on floor 2 tho. Haven't tried the bar.