She's been told about the sleeping gas that'll eventually be released through the air ducts to force RED-clearance citizens to sleep. Yet Katniss doesn't move into a more comfortable position. She continues to sit with her back to the wall and knees pulled up to her chest. If she's eventually forced to go to sleep, she'll survive. It's entirely possible, if memories are to be believed, that she's slept in worse positions and worse places.

One more question doesn't hurt. She notices Allison looking in her direction again and nods in response to the question. "You?"