Frisk didn't know how long she had been standing there. It could have only been a few, it could have been several...She didn't know. She shuddered. The hall provided shelter from the wind and falling snow, but it did little to shield away the cold. 

She hadn't heard Sans approach, so she tensed when he pulled her into a hug. The hall had been so still, so quiet aside from the wind outside, that the sudden change startled her. Relaxing at Sans' words, she pulled her hands away from her face and returned the embrace. Wrapping her arms around him, Frisk could swear that he felt...different. Maybe it was all in her head, but it wasn't hard to see how exhausted he was. She held him tight, yet silently feared that he would turn to dust right then and there, that any touch could break him.

It was hard to remember that he only had one HP. He was incredibly hard to hit, confident in his magical abilities, and rivaled Undyne when it came to smarts in battle. He was the strongest boss monster around, and no one knew that better than Frisk. But he had his limits. Frisk knew that, too. 

It made her think. Who else could take him away from her and Paps? Would it only take another Sans catching him off guard? When he was this tired, how easy would it be to just...blink and he'd be gone? She swallowed hard and hugged him a little tighter. "Yeah, let's go."

She lingered for a moment, hesitant to leave his arms, then finally backed away to open the door. As it creaked open, a rush of wind and ice billowed in and made her shiver. 

Frisk was quiet as they walked, watching the ground as she moved. She stuck close to Sans, occasionally brushing against him. Rather than feel flustered at being so close to him, she found it as a great comfort. After what happened, he was still there. He hadn't left her.

"So," she finally said, clearing her throat a bit. "That was...another you, right? Someone from an alternate universe?" Her gaze was still cast to the snow at her feet. Of course, she knew the answer, but figured it would make a good opener for what they should be talking about.