Sans doesn't wait. As soon as Papyrus starts firing, he does at well - he summons up his proto-blasters, ordering them to fire on the same spot. A stream of blue and gold light bursts forth, utilizing both his angelic and monster based magic.

Part of him worries, though. He knows he's still bearing her implant, and there's always the change that she'll use it. Maybe it's inevitable, but he makes the determination then and there, that he's going to keep fighting until she stops him. One way or another.