Guys, you are just looking for excuses for DPC's bad writing.
Lily being a cop? Really? A girl that works full time in a strip club, is about 20 or 21 years old, buy drugs for her and the other strippers, and ask MC for a few bucks for having sex with him?
Quinn allowing only the MC go to her room to fuck? A room that looks like a whorehouse, leopard sheets, sex toys, candy and booze included? Really? I don't think Quinn would do a lot of money only with one regular client. If Quinn made "the offer" to MC, you can think the she made the same offer to Derek and probably Caleb and the other DIKs and alpha wannabees. For sure, the other DIKs and the alfas too the year before. Quinn barely knows MC when she proposes the "restaurant deal" to her. He's not special for her. It´s something that she does with every fresh student she met since last year at least. Only that way Quinn's business has sense. It DPC pretends that we think otherwise, it's awful writing.
By the way, Quinn doesn't kiss guys because she's totally straight. She fucks with girls because business or to manipulate them to include them into her "restaurant" (Riona and Camila), because it's kinky, or
just because this is a porn game and all girls being lesbian is like MC having a magic cock, a cliché of the genre. But she knows there is no risk for her to fall in love with a girl. No problem if she kisses them. But she knows she could fall in love for a boy, and she doesn't want to. Bad for business. That's why she doesn't do "boyfriend stuff", like kissing or "pijama parties", with boys. Except the MC, of course. Haven't you see "Pretty Woman"? DPC has copied that from that movie. Julia Roberts doesn't kiss men because she doesn't want to get too attached to them since they are only clients, and that's how they must remain. But then she meets MC, I mean Richard Gere, the start behaving like lovers, and you know what happens, at least in Disney version of the script. The ending of the original one was different.
And Heather knows about the drugs and says nothing about it because of Tommy, but I don't think she knows about prostitution. The same could go for Elena. Why a girl would stay in a sorority that could end up (and probably will be) being a national scandal and ruin her reputation even if she's not prostituting's herself, if she's not into that business?