For a moment, all Sans can do is stare. Did that actually work, part of him wonders? Is she going to stay down? Should he get in another hit before she can pop back up again?

He shortcuts to Frisk's side, still staring at the place where Lapis settled in the trees. After all of this, he's caught between pressing forward and just running. That experience in the mud was not one he wants to go through again.

He remains frozen there for another few moments, before his expression hardens and all three of his blaster summons appear in the trees and circle around Lapis warily. Taking the shot now would put an end to this for sure, but without knowing what can and can't kill a gem, he doesn't have the stomach for it.

Hah hah.