Einstein leads Emrys away into a corner, as far from the rest of the group as she could get. She spends a moment putting up a barrier against escaping sound - wouldn't want anyone listening in too closely, after all. Just in case some things are said. It takes two tries to pull the magic into the correct configuration, her annoyance getting in the way of perfectly maintaining the magic.
Finally, with that done, she turns on Emrys. "What the hell do you think you're doing?"
Control Sound P3