In September 2015, Dunn was added to the roster for the national team's Women's World Cup victory tour prior to the September 17 match against Haiti, becoming the first player not on the World Cup roster to join the tour. She made her first start of 2015 against Haiti and earned her first cap since the England friendly. She recorded her first career national team assists, both on Carli Lloyd's goals, and scored her first national team goal in the final moments of the match.