"Time to go," River whispers, under the crack of wood and the shouts and screams of battle.
The hard part
She doesn't move for an instant; a heartbeat. Her head is up, her small face pale and bloody and full of a lethal glittering intensity.
is putting the gun down
And then, "Time to go," she mutters again, sucking in a sharp breath, and it sounds as if she's talking to herself more than anyone. She darts backward, through the doorway Spike's holding open, and into the infinitely quieter bustle of Milliways.