"Shhh."

The tears are spilling over again, sliding silently over her nose and into her tangled hair.

"Keep the neurons in your brain. They're watching, they're always watching. Simon."

Another twitch of one hand. River squeezes her eyes shut in despairing frustration, and immediately opens them again, staring at Simon with a leaden, unsurprised horror.

"Time to rest. Got a break. Shhhhhh."

Her voice cracks in spite of herself.