River stares at Joe's gun, or through it, for a long second. She breathes in, and out, slowly.

And then she picks up the cloth by her elbow, and wipes the gun clean of excess oil with a few deft motions, and sets it down again. She reassembles the gun in a series of rapid clicks -- her hands are quick and sure, and for once her gaze doesn't go wandering -- and only then lifts her eyes to Mal.