Thats not insane to be honest. First off, electrocute isn't that good on quinn, press the attack is much better. Second off, quinn attacked you in 5 different instances, and her auto attacks aren't necessarily long range either. I mean if you are playing a melee champ into quinn then that makes total sense, she is meant to be a hard lane counter to melee champions. Third off, that entire combo only did half of your hp? that's like a 90% - 100% hp combo. I would be extremely surprised if all of that only did 50%.
quinn is a high risk mediocre reward champion. if she doesn't get fed in lane phase, then she doesn't have many chances to come back. Sure itemization like stormrazor helps her a lot, but the nature of her kit means that if she isn't strong enough to 1v1, then she is practically useless. It's the jungler's job to camp quinn tbh, if quinn is camped then its a guarantee that she is useless. Quinn has an inherent advantage in the 1v1 because thats really the only thing that her kit lets her do. If she wasn't strong in 1v1, then she is automatically one of the worst champions in the game.