Kennedy is so very - Kennedy. After having nothing to do with Daju during the game, she must have sensed that Daju was in a hurry afterward and ran after as she made her way to the car. She found her scarf to be the perfect maypole streamer and began dancing around. Since I had the huge lens on the camera I was all the way across the field and couldn't hear their conversation, but I imagine it to be something like:

Daju: Kennedy, I need to go sweetie - let me have my scarf.

Kennedy: Wheeeee!

Daju: (laughing) Kennedy, really - I need to breathe, sweet girl.

Kennedy: (laughing and dancing) Wheeeee!

After a few rounds Daju escaped and Kennedy continued dancing:
God sent that girl for a reason!