Katie wasn't a brilliant Quidditch player for nothing. Her instincts kicked in instantly when he lobbed the snowball at her, and she ducked in time to let it whizz by her head. "OI!" She called out, laughing as she ran after him. "You're so gonna pay for that, Higgs!" She slowed just enough to scoop up a handful of snow, matting it into a snowball as she continued after her, taking aim and them hurling it at his back.