Whoa - when was Quinn ever asked (or it suggested) that he "do something worse" (than have her hospitalized) to Carrie? I totally missed that.
There wasn’t a scene where he was asked her to do something worse to her. There was a scene one where Quinn knew that’s the direction things were headed in if Carrie didn’t stop fighting them.
He went to visit her in the hospital in 3x02, out of concern, to warn her about it and to try and convince her to back off, because he didn’t want to see it get to that point. He brings up his orders to kill Brody (which needed to happen because Brody knew too much making him a threat to them, much like Carrie was at the time) when he didn’t think she was truly getting how dangerous her situation was and just how far they might be willing to go to keep her quiet. He was trying to persuade her to give in to prevent things from getting to that point.
So interesting - I have watched 03x02 like five times and never caught on that he was referring to his assignment to kill Brody when he said, “there are people being targeted.” But it makes sense, especially since prior in the episode Dar tells Saul, “I’m going to stop her.” “It” being Carrie’s behavior.
And still, I don’t see Quinn as ever being deceptive and malicious towards Carrie. Did he have her committed and medicated against her will? No - that was Saul’s plan, which he learned of after the fact. Did Quinn “leave” Carrie there? Imo, no. He visited her because, as you said, he was concerned about her, proceeded to warn her to be careful (not threaten her to keep quiet or else he may have to harm her) and then he came to her hearing to help get her out. Imo, his intent since the end of season 2 has been to look after Carrie’s well-being out of…love? Respect? Admiration? Not sure, but I do not think it was ever malicious.
I also never viewed Quinn as just passively going along with Saul’s plan. To me, Quinn had three choices:
1) Try to get her out of the mental hospital: kind of an impossible choice given that he had no power to do this unless he shot his way through or threatened to kill Saul if he didn’t let her out, etc.
2) Walk away from the CIA and leave Carrie on her own in the hospital: this doesn’t help Carrie nor Quinn’s own morality
3) Leave Carrie in the hospital AND try to protect her while she is in there: look out for her, be the influential voice in Saul’s ear, Dar’s ear, maybe even take out any threat to her, etc.
He went with #3 and that is why I continue to ship them.