She did know what was inside, and immediately recognize the significance of him passing it over to her. Even temporarily. Regardless of the rules, she made a mental note right there and then to make absolute certain that it was returned to him.

"Jack..." her smile softened, and she lowered her eyes to accept the pouch with care. Making a point of wrapping it securely around her own neck as well. "Thank you."

There was a moment when nothing happened, before the water reacted. Satisfied.