At first Regis just blinks owlishly in confusion as if he doesn't understand. When it does dawn on him his expression gives it away clearly, his eyes widening and even a touch of color creeps over his pale cheeks. "Oh. Oh yes, of course! I'm sorry, yes, please excuse me."

Looking a bit awkward he ducks out from under the tent flap to give her the privacy to change. Standing there he notices a couple of odd looks from the others, who he supposes wonder why he's coming out from the Inquisitor's tent at this early hour.

It's not that he's been unaware of the fact that she is a woman and a fine one at that. But ever since he noticed her coughing the day before and since he brought her the mug of medicinal tea, he's mostly just viewed her in the light of a patient. Man or woman simply doesn't matter in such lights. She has reminded him now, though, expressing her need for privacy and why. And, damn him, for having more than enough imagination to picture why.