One of America’s newest heroes, Megan Keller can’t stop smiling as she says her goal in overtime to beat Canada in the gold medal game at the Milan Cortina Games is still a blur. “I don’t know if it’s sunk in yet, to be honest,” Keller told reporters at the Boston Sports Institute in Wellesley. “This is our dream to represent our country and win a gold medal for your country. I don’t know how long it’ll be until it sets in, but it’s very special.” Back at her practice arena on Thursday, the 29-year-old soaked in the Olympic gold glory with her Boston Fleet teammates. Head coach Kris Sparre drew up a reenactment of his team captain’s golden goal to begin practice. “Today, we were all talking...