Is it wrong I find this game just fine as is? Don't misinterpret, anal scenes (since she seems an anal virgin, a scene for her losing that) and a hidden 4th ending of her getting pregnant and telling you to take responsibility for would be great (plus no more paid sex). Nothing here is really forcing her to do this, at any point she could have said no (lol only if the game started with all options open and she wasn't ready for some of the more extreme stuff) but she doesn't. She pretends its forced and goes along with it anyway. After playing all current scenes and endings, she does this of her own free will and convinces herself at a few points it's not cheating if it's for her boyfriend when in reality she wanted it but needed an excuse to do it.
All that being said, if there are future updates, scenes that involve anal and getting pregnant would be nice. Maybe do a scene where you fuck her at home, the start of "Truly stealing her" from her boyfriend, when you and her first do anal.
P.S. Honestly at the end for the third ending, I just did a lot of unprotected sex with her. Oh and incase no one else realized it, the renovations building does open after a point, it won't say when just walk to the door, and it's the recollections room. Open the chest, it truly helps.