That seems highly unlikely considering Sage has no idea what Quinn is up to, so how would she be funding it without the sorority president even knowing about the money at least.
Further, regardless of her illegal ventures, Quinn has shown her intent on messing with (if not worse) Maya and Josy, for no other reason than the fact that the MC likes them. There's nothing of practical gain there other than being a jerk ass, so that automatically kills any 'secretly benevolent' Quinn theory. Oh and btw, none of the other girls seem to have any outright sexual tasks on their lists. Meanwhile Maya has a list full of threesomes, public sex etc. While in a way it works to the MC's benefit, it's highly doubtful it was intended that way.