It's nice to see that Quinn is every bit as incompetent as always in this episode.
Quinn has so far been able to run her businesses without Sage knowing about them because she has her complete trust. So naturally, Quinn thinks that the best thing to do now is to give Sage reason to doubt her by breaking a deal with the DIKs in order to create an opportunity for herself to make money by selling drugs to the preps.
This plan of Quinn's has the added effect of angering her partner in crime Tommy, who had trusted her to bring the HOTs to his party as was promised. The payoff for Quinn is... well... not much really. Turns out that the preps weren't interested in buying what she was selling. They wanted cocaine, while she's trying to sell cannabis. So this seems like a bit of an oversight on her part, considering the well known stereotype is that rich folk like coke.
Fortunately, she has her other business to fall back on. Her takeout service is now a delivery service, but it doesn't really pan out for her either. Camilla responds to your proposition by saying that Quinn would be angry if she gave something away for free, right before she gives it away for free. A short while later, we see Mona run out of a room shouting that she can't go through with something. What that something is, isn't spelled out, but it ain't hard to figure out. Camilla runs after Mona in a panic, while Burke exits seconds later while wearing those pinstripe pants you might remember spotting through that bathroom glory hole back in chapter one if you looked in there immediately after Quinn and Riona walked out.
So the day ends with Sage mad at Quinn, Tommy mad at Quinn, and everyone involved with Quinn worried that Mona might spill the beans. Unfazed by it all, Quinn takes everything in stride and comes up with a master plan to set everything right. Just kidding, she ends the day by getting high on her own supply.
I had previously complained about how much I hated the fact that the game didn't allow us to retaliate against Quinn in any way shape or form, despite the game giving us two perfect opportunities to effortlessly ruin her plans. But now, I'm starting to think that just sitting back and watching her ruin herself might be more entertaining. I'm not sure how much deeper she can dig this hole before everything collapses in on her, but at this rate she shouldn't last past the end of the season.