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 team event, the United States prevailed over Kazakhstan, China, then Ukraine and met France in the final.

[4] At the 2018 World Fencing Championships in Wuxi, Stone finished with a bronze medal for her best individual result to date, falling in the semi-finals to eventual champion Sofia Pozdniakova.

[6] In June 2019 she won her first gold medal at the Pan-American Games, and as a result achieved a career high ranking of 5th in the world.

She competed individually and in the team event alongside teammates Mariel Zagunis, Dagmara Wozniak, and Francesca Russo.