Mystics guard Sonia Citron has emerged from the shadows into WNBA stardom. Erica Denhoff/Icon Sportswire/APShe saw the guy heading her way and knew what was coming next, with the sort of sixth sense a star athlete develops when they’re out in public and can feel all the eyeballs pointed at them. Sonia Citron, at the time an all-conference guard at Notre Dame, was at a restaurant with friends in South Bend, Indiana. She was still mulling how best…