No, she isn't celebrating that she just got asked on a date by that handsome lighthouse operator she's been keeping an eye on...
But yes, this display of physical fitness does have something to do with him - she's showing off her martial arts skills (and flexibility) to him.
Let's just hope she doesn't scare the poor guy off (assuming he's not too busy to notice her - or sleeping through the day as he works all night!). After all, what shape would he be left in if he happened to make a wrong move around her? I guess he's got a pretty good idea about that if he happens to be watching her right now...)
