Eh, I don't think those are particularly strong examples. Quinn not wanting Tommy to take the blame is purely a hypothetical matter, and technically she wound up accepting Tommy's offer (including the part about being the fall guys).
And on the Tommy fallout in particular, how is that an example of her having a conscience? All she had to to was apologize for her blatantly obvious fuckup, and she still refused to do so! The fact that Quinn is sad about the situation doesn't automatically mean she's secretly feeling guilty; she may just want something she can't get. Even if she IS feeling secretly guilty, that still means she's actively suppressing her conscience, which is a substantial problem as well.
I hadn't really thought about it before, but the reveal of Sage's family makes Quinn look much worse in retrospect. Running a prostitution ring under Sage's nose is already plenty bad. Doing so with
Sage's father as the main client is on another level entirely.