Mallory Hytes Hagan, a 23-year-old from Brooklyn, N.Y., tap danced her way to the Miss America 2013 crown on Saturday night.“I can’t believe this is happening,” she said tearfully, after last year's winner, Laura Kaeppeler, put the crown on her head.Running on a platform of child sexual abuse prevention, Hagan beat out 52 other young women for the $50,000 scholarship prize after winning both the b...