Well, the daughter only sort of gets out of the way - which is all she ends up needing to do, because shortly after setting Peridot down with a glowing "nice one!", Sans has witnessed this about to occur. Now that the count has gone down, the wind is much less distracting - meaning there is nothing stopping him from summoning his scythe and putting himself between Zangetsu and the crow daughter.

Sans is a much smaller angel, his his wings and halo are flared bright as he blocks defensively with his weapon, holding the warrior angel back. This isn't what he's made for, but he'll try.

"Knock it off," he snaps. "She's a changeling, man. She's brainwashed."