... yes... I would say it is. [It's a stiff response, but not because she's not responding to the situation she's ended up in. In fact, even from behind he can likely see her cheeks flushing red. And failing that, he can certainly feel the air going in and out of her chest, a little harder, accompanied with a faint panting in her breath.]

You recover quickly, don't you? I thought for sure you would be a stammering mess for longer than that. That I would pin you down through nothing but your own nerves!