Yeah, it's annoying when games do that. Nicki comes the closest, but it stops just short of becoming stupid. If you play her dark route in chp 1, she keeps having orgasms and seems like some part of her is enjoying it or something. I think it's supposed to be extra horrifying for her because she seems to be into kinky/rough play for real, maybe even has rape fantasies, clearly has feelings for MC, and orgasms are a defense mechanism for many women during assault encounters. She probably feels guilt & confusion over it, as many women report in these situations. Dark Guy, being the utterly self-centered man he is, interprets this as "heh, the bitch loves it, I knew it", but in reality, Nicki is in shock and probably can't even process what's happening. And ofc some level of stockholm.