Frisk dragged her gaze up to look at Sans, taking in his,appearance as he spoke. She listened, but couldn't keep her attention from mostly being on how exhausted he looked. How much magic had he used? Obviously too much if he was choosing to walk, rather than teleport them back home. Frisk wrung her hands together nervously, vaguely hoping it looked like she was only trying to warm them up rather than worrying over Sans. 

And it wasn't just concern for him. She worried for their timeline, for their safety against such a foreign and dangerous counterpart. She worried for Sans' happiness, for out of them all he deserved it the most. 

She looked away, and jumped when she felt cold bone against her skin. Letting the action take some of her stress away, she tightened her fingers around his. "Neither do I." Perhaps this wasn't the best time to have this conversation, but it had to happen sooner or later. Preferably when Sans was too tired to brush her off and try to change the subject. 

"I won't let it." 

Not without a fight, even if it was against a being with far more abilities than her. Would the saves help? As a failsafe against damage that would otherwise be irreversible without resetting completely? She hadn't saved in years...She wasn't sure if she even had the power, anymore. Just when she had a good reason to use it...How ironic.

"I've seen one of the other universes before," she suddenly said. "I don't know how, maybe it was a glitch in whatever controls this whole thing." She looked down at the snow, her gaze unfocused like she was lost in a far off memory. "Everything was so...wrong. Flowey was good, but he begged me to kill him. Everyone else was so bitter and angry."  

"I lasted...maybe an hour? I probably would've made it a little farther if that version of you hadn't found me." She squeezed Sans' hand. "No matter how much mercy and determination I showed, he just got angrier. Like he had no idea what kindness was." She rubbed at her eyes with her other hand. "I can't imagine what it takes to break someone like that."

"I never want to go back there again, Sans."