Stone joined the US national team in the 2012–13 season, during which she took the silver medal in the Pan American Championships after being defeated in the final by two-time Olympic champion Mariel Zagunis. In the 2013 World Championships at Budapest, she was stopped in the second round by Matylda Ostojska of Poland. In the team event, the United States defeated Belarus and Azerbaijan before being stopped in the semi-finals by Russia. They then topped Italy to earn the bronze medal.