I think it depends on just how close you are to Quinn. If you're just "a customer" I doubt Riona would care that much, since she'd see you as another paypig for the "restaurant". Whether you're a Chick or DIK, I think she's like Sage in that regard that she doesn't care too deeply, since both versions of MC are appealing. Either the sensitive guy who tries not to get into altercations, or the wannabe alpha dude that throws his weight around for the people he cares about (and those that piss him off for that matter).
I think if you have a deeper relationship with Quinn other than the restaurant bs, she'd have a problem with it, especially since MC actually got taken to the outside neighbourhood where "Buddy" was at, and we get the idea that Riona was NEVER anywhere near that area, given that Quinn tried to protect her from it. (And it makes sense: Quinn has some experience fighting but Riona is like a puppy.)
I have a strange feeling that Riona's path is about to go down the route of Mona. She'll drop out and disappear from college, never to be heard from again. I'm hoping it doesn't come to that, but it's not looking good. Mona was disgusted and felt trapped but Riona literally got tortured by criminals.