"Shiny," Hook agreed, with am approving lift of his eyebrows - of course Ariel would be fascinated by such a human toy; she'd probably keep it with her forever and always, along with the rest of her junk in that satchel of hers. "Try not to take very long," he added, because he had a pocket watch with him that could time her - and he was stubborn enough to plunge down into the lake after her if he had to, however, that would be sort of a last ditch effort. In and out, fast and quick yet efficient was sort of the goal with this.
Then the fins came out for her to flip - it was serious business, she was really going. Before she left he leaned in, not rocking the boat too much, and curled his good hand around the back of her neck to kiss her goodbye - they didn't have time for the star light sprinkles kisses, but it invoked warmth on the chilly waters anyway.
"Go on, then, find us some treasure." And hopefully a way out of this evil shithole.