In 2013, she made the women's senior team and participated in the 2013 IIHF Women's World Championship and remained on Team USA for every following season, including the 2014 Olympics. Carpenter scored the game-winning overtime goal to lead the United States to a 1–0 win over Canada at the 2016 Women's World Championship. She was one of the final cuts from the 2018 Olympic team, but was brought back for the 2019 World Championship. , Carpenter has participated in five IIHF World Championships with the United States’ senior team, claiming gold at all five tournaments.