He didn't want to talk about it. The nightmares and hallucinations..the things he saw when he closed his eyes at any given moment. He didn't know if he could. They scared him. Killed him inside and tore away at his heart a little at a time. But still since then he'd hardly mentioned the Joker. What his prison was like, any of it. He figured they could assume, and that would be fine with him..when he thought about it, it was like he was reliving it. He didn't want that anymore, so he tried to block it out. Cover it up with the stoic look that was currently hiding heart breaking emotion. Push it back into those doors in Batman's head where emotions didn't matter right next to History class and physical pain.
Terry didn't speak much at all since the kidnapping..when he did it was obvious he wasn't all there. It was clear how much it had affected him, and hurt. So he looked away and watched the movement of city lights below them instead. Refusing to be vulnerable. That's what had gotten him into this mess to begin with.
"I should have thought of another way out.. I should have known.." Not like it was possible with the drugged air and condition he was in. But he blamed himself..it was just a thing with bat people he supposed. Self blame and loathing..