River's head snaps over, a moment before Harth slips out the door. Her face tightens and twists, with something that might be irritation and might be more--

And then a probably-demon's stake-ended nightstick whizzes close enough to slap her flying hair against her cheek, and a definitely-demon's claws rake two bloody lines down the outside of her bicep, and anything she might have intended to say to Harth or Spike is lost in the need to survive the next few minutes.