[It takes him a while to understand what she means, but when he connects the dots and does - with an 'oh', blinking back at her - he softly shakes his head.]

Don' mention it. I had t'do somethin'... I had t'try stoppin' 'em, and I know you'd a' done the same thing. Besides, you'd already helped me out an' other people were gonna need you to patch 'em up.