You're the one calling her options slutty. That's not quite true. She is choosing the more hardcore options because she sees some goal she can achieve or some money she can make from having ever more hardcore sex. Doing more hardcore acts is not slutty. Slutty can be one woman being in a sexual relationship with 5 different men and just having missionary sex with all five at different times. A woman in a sexual relationship with one guy but does anal, atm, watersports or hard BDSM just with her partner isn't a slut. She may be crazy but not a slut.
Whether Monica's outlook on her sexuality is realistic or not is in the eye of the beholder. We obviously disagree. That's fine. The only reason I got involved in this discussion was when you were claiming it is objectively poor writing that Monica wasn't acting as you would like. It is subjectively poor to your mind and many agree with you. However many like me don't.
I'm not going to change your mind anymore than you will change mine. I'm happy to leave it here and agree to disagree.
your point of view is also fine, but that makes the game is a lineer game. there are options, paths for a reason. So if dev is aligning with you, no matter what player chose, monica's character will stay same all the time.
there is a way to satisfy both point of view, its called multiple choice. that's what makes the visual novel, visual novel. so your monica can be non-slut according to your playthrough, and my monica can be slut according to my choices.
by this logic whatever hardcore option player chooses, their choices are not matter its only cosmetic. Actually whatever satisfies the player is the corruption concept, not the sex itself. people play to see how corrupt the characters can become by their choices when they play porn vn. you can also play the purest path if the game allows that's fine, but you can't deny that most people play it for basically this reason.