She wasn't wrong -- Papyrus, like Sans, has no organs and therefore no breathing or heart rate to monitor. Still, the fact that he wasn't crumbling to dust was the best indication that he was hanging in there until he woke back up.

"Well, I..." He didn't feel so hot, physically or emotionally, but he didn't want to worry her. She seemed nice, and he wanted to make a good first impression. He grinned at her, a bit more than he was obligated to as a skeleton. "I'm sure I'll be better in no time!"