Gracee Kimbro, 16, a junior at Calvert High School, is pictured at the Atlantis Yacht Harbor in the Bahamas during her Christmas vacation. Kimbro has been selected to represent Maryland and Calvert High School at the Washington Journalism and Media Conference at George Mason University. (Photo courtesy Gracee Kimbro)PRINCE FREDERICK, Md. — Gracee Kimbro, a…