I don't think it will matter either way. Might just be a slight dialogue difference at some point, but I don't think it will have any major impact in terms of a pursuable relationship. Quinn's just going to keep doing what she's been doing, and then when it all inevitably goes wrong we'll get probably have an option to help her or not that will likely be based on if you performed certain actions like getting her number in ep 1, fucking her in ep 4, etc.
She could, however, be to this story what Ana was to AL; the one you end up with by default if you don't get any of the main LIs and did certain things like fuck her and help her out later.