Khan represented Cambodia at the 2018 Asian Games and claimed a gold medal in the women's 49kg ne-waza event.

[9] On October 6, 2020, Khan was awarded her black belt in Brazilian Jiu-Jitsu by her coaches, the Mendes brothers, just two days before her nineteenth birthday.

[11] On February 26, 2021, Khan made her debut appearance on Who's Number One, defeating Danielle Kelly by unanimous decision.

Khan competed in the 2023 Brazilian Jiu-Jitsu European Championship, winning a bronze medal in the women's roosterweight division.

[23] Khan was booked to compete against Danielle Kelly in a rematch for the inaugural ONE Championship Atomweight submission grappling title at ONE Fight Night 14 on September 29, 2023.