18 May 1888 — Welcome to the Jungle Fashion Show, Hogsmeade Ballroom
Ernest took very little notice of the social calendar except to dutifully attend whatever his wife told them they were attending. He sometimes made an effort to remember who the host of any particular function was, but the truth was that they all had a tendency to blend together, one ball into the next. He could be grateful at least that the theme of this particular outing was novel enough (and grateful too that it was not just another dance; he was a fair dancer but found the obligation to dance with women he didn't care about rather tedious). He was less enthused about the auction aspect of it, as he suspected his wife was inclined to participate after seeing the dresses in the fashion show, and expected a good deal of entirely unwarranted money would by the end of the night be funneled out of his Gringott's account and into the hands of some foreigner or other.
But that was the way these things went. He went to work and made money, and Rufina filled her days finding ways to spend it. At least the deaths of his father and brother had put them in a position to never be wanting for it, so what did it matter to him what sort of dresses his wife wanted to buy? He was merely here as an accessory. He'd chosen a hound mask as something of an inside joke (although he suspected no one would understand it except himself) and was trotting along faithfully by Rufina's side and waiting for the evening to be over.
At least, until he saw her. Ernest could not have said what caught his attention so thoroughly about the woman that he had at first only glimpsed on the other side of the room, but he immediately made an excuse to his wife and their conversation partners (interrupting whatever they had been saying) and slipped away, on the pretense of refilling his glass of champagne. In actuality, he was doggedly looking for the woman he'd sighted at first, but she was proving devilishly hard to locate in the crowd of meandering guests. He had the feeling that she was specifically avoiding him, but of course that didn't make any sense. He was fairly certainly he'd never met her before, though it was impossible to say for certain with the mask she'd been wearing.
Whatever it was, he was inexplicably fixated on her. He kept catching tantalizing glimpses of her across the room, to the point where it felt like he had been chasing her through the ballroom for an age. Had she noticed him? If so, she was being incredibly coy about it, but she was doing a damned good job of always being where he wasn't, all the same.
At long last he caught up with her. He felt rather triumphant as he reached out and wrapped his fingers firmly around her wrist — he'd caught her! — and let out a jubilant "Ha!"
It was only then that he realized he had no idea what he had intended to do with her upon catching her — or, really, why he had been hunting her down in the first place — and immediately felt quite silly.
Open to a woman at this event; I'd prefer she be wearing a goose mask but am open to other sorts of game/quarry animals as well.