She didn't mind the crowd... but the thought of sharing Kanda's attention with his (cheerful, cute, well-liked) fellow exorcist was unpleasant. Mercury decided it would be best to agree with him.

First, she pressed the button, and a much more normal-looking Ami gave Kanda a sly smile before looking over her perfectly-fitted new outfit. (Why had she ever been unsure about using this? It was convenient.)

"Shall we go, then?" And for the sake of the eyes that might watch them, particularly Lenalee's, she indulged in the somewhat possessive gesture of taking his arm.