Sans eyesockets went hollow as she mentioned being bait, everything else she said afterwards was drowned out by the heavy flow of magic pounding through his skull as blind fury grew in him. Bait? Is that the standard she held herself to? Just bait? And even if he did have time to attack while she distracted the glitch-Sans, his aim wasn't exactly a pinpoint shot. His gaster blasters were meant for speed and coverage, not accuracy, so it would be fairly easy to just accidentally hit her while she was doing her distracting. No, he wouldn't let that happen.

"N O T  A  C H A N C E  I N  H E L L."

Fuming, he turned to her with still blank sockets,"do you even know what you're suggesting?! is that really all you see yourself as?!! just some easily replaced target practice that i'll willingly use to get an opening?!!! no, not happening. your stats are hardly better than mine, and i won't let you just throw yourself in the line of fire so i can have an opening! i don't care that you can reset, this guy isn't playing around! even if you reset it all, he's a 'sans', he'll remember it all and just come back!" Growling in frustration, he pulled his shoulder from under her grasp and began to pace, hands clenched tightly inside his pockets, bones rattling quietly, and a dark "smile" on his maw.

And on top of it all his dodging skills weren't just something he could teach her. They were a learned habit from many murderous humans and many, many resets. Even if he tried to teach her, it wouldn't do any good.

How could she think this was ok? That he'd just roll over at such an absurd plea? He.... He couldn't stand the thought of starting over again. Much less the thought of losing Frisk forever. But if he was strong enough, he could protect it all, and nothing bad would happen. They could all just live peacefully in the Underground until they found a way to break the barrier. He just had to get stronger.

Not sure what to do with himself, he just continued to pace and fume, until finally just keeping opting to keep his back to her as he spoke in a weary, almost cracked voice,"just go home, frisk."