Oh. This is a game. Mud has asked her to do a shooting game. That makes way more sense. "There's one less letter in HORSE. But that shouldn't matter." Says Carter, who does know how to spell ZOMBIE.

She's not sure she knows what colors are, though, when Mud makes his call. None of them have on red raincoats. Luckily, context clues display a zombie in a green one, and that's good enough. She reminds herself to look up facts on color blindness later, and then rids the zombie of her left arm, cleanly at the shoulder joint. She rocks her own carriage forward to grin, smug, down to Mud. "Get the right one, now."