Poke. She's at the very least poking the water, to watch it ripple. Seeing how things Work like this is neat, and one of those things is what weird tea flowers look like from above the water.

"Mnh....I don't know yet," she decides after a moment. "...You have lots of things, and I might just take one of the flowers you already used..." She's assuming he doesn't need them after the tea is done after all, right?