you have a power where you can control water, of course your parents told you to hide it.

on christmas eve and you still believe in Santaclaus, you wait. suddenly when you were playing with water from your glass, the water froze. it's like in the movie, there jack frost

"oh hey beautiful girl, you're cool..."

he saw your skill in handling water easily as he continued to float in the air with his ice broom, but he flew away because he had to go back to help santaclaus.