[Bucky really, really didn't need anything more to make the corner of his eye twitch at Sherlock's little traps, but this just about does it. Just about, because it seems at least this time, the trap has failed to work as planned.
Now, of course, he doesn't have any trouble in recognising Elsa as it is, which only adds to his initial rush of OH LORD and the very literal rush as he, well, either intends to grab her back or shield her from the water, which isn't very rational as water can hardly hurt her, but. He stops just a few feet away from her, letting out a huff that's half-amused, half-relieved, and speaks out:]
Now, here I was, all ready to help you out, but it seems my help ain't needed at all. You're real resourceful, princess. [See, he can do this correct form of address thing. Only when you're not appreciating it, that is...]