[ Hey, she's drowned a lot more than you have, mister! She can figure out the standard first response to near drowning just fine! ]
Oh, that. [ She does sink down into the water a little more, not wanting to object him to her jubblies if he's not comfortable with it (and she suspects he might not be). ]
To misplace it I would've had to bring it in the first place. Kind of felt like the right time for skinny dipping.