I have to disagree a tad with you there.
It's crystal clear Quinn absolutely wants 'the dick'. Just recall at the initiation party's 'cumpetition' and what she says after she pulls off the condom from the MC. And it's much more than simple 'teasing'. But on the Chick path she thinks the MC is a 'weak sissy' and not "bad boy" enough for her.
Granted, on the Chick path she won't ask you to accompany her in town at the end of episode9 (for whatever motives she has for asking you when on a DIK path). But it's clear when she is on the roof talking with Tommy if you chose to 'talk back to Vinny' in your room, she kinda gets lost in a moment of self-reflection. At which point we can no longer be certain what her future intentions might be concerning the MC. But one thing is certain, the fact that she admits to Tommy that she was wrong and sorry, shows that she's softening up a bit. And who knows how this may progress.
Man, this happened early in the game, it was one of the first interactions between them, what did she know about the MC? What did he know about her at that moment?
Did you expect love at first sight?
If you want to talk about the beginning, it's obvious to everyone that she showed interest in the MC, even Sage mentions something like that, but that's it, interest, and in the beginning, what happened between them after that dictated how their relationship would be, they they may not have anything in common, they may not interact much, but she doesn't treat you badly, she doesn't antagonize you, at best she loses interest.
We're talking about interaction between them in future episodes, not what happened at the beginning of the game.