No, I doubt she'd do that, it would be mutually assured destruction on Quinn's part, since we know that Quinn is involved with Buddy, who she's known her entire life, and that he also provides drugs for Vinny, it is most likely that Vinny got involved with Buddy through Quinn, she probably got Vinny involved with her business in the same way she's setting up MC to get involved by being her bodyguard.
Although, it is possible that Quinn and Vinny knew each other from before, and that he convinced Quinn to apply for college, but I find that to be more far fetched.