Lucky had to gallop behind her towards the exit, flapping her wings furiously for ten meters or so before she managed to get the speed to take off. She managed to keep her wings in close, close enough that she wouldn't scrape along the side of the room and go tumbling out of the air. The doors on the front of the school weren't open, but Dust didn't seem to care. She moved her wings, and a blast of air slammed them open in front of them, letting them both zoom through them, past a few stunned-looking crystal ponies trundling their slow way down the school steps.