River swings round, small face sharp and lethal, and the gun in her unwounded hand blurs upwards--

And jerks sideways, as she catchers herself with a gasp and a swaying stagger that has nothing to do with pain or bloodloss, and the loud crack of another shot overlaps with the scream of a snaggle-fanged demon.

Her right hand tightens around the grip of the gun she's still holding, tightens and almost immediately loosens again as fresh blood wells around the arrow shaft.