The only thing that makes Quinn oppressive is that she's primarily taken top.
The whole, ranged vs melee top is a whole different story than just Quinn and involves a lot of missing cigars.
You want to beat Quinn? Play smart and safe early and then murder her at six because you didn't feed her to two early ghost blade components and she enters a power trough at six. If she roams take her tower.
Quinn is one of my favorite champs and I'll admit she can be OP against melee champs , but that's just because she's built to kite all day.
TLDR: Don't over aggress early, farm safely and don't be afraid to miss a few CS (which is better than her killing you for trying it). Proceed to murder her tail feathers at six.