[4] Thévenon started competing BJJ as a purple belt, reaching the finals of the European Open two years in a row in 2014 and 2015.

As a brown belt she became the 2017 European Champion in the medium-heavyweight division after beating Jessica de Andrade in the final.

[9] In 2019 Thévenon reached the final of the Abu Dhabi World Professional Championship winning silver,[1] after facing Gabrieli Pessanha.

[13] That same year, attending the Brazilian National Jiu-Jitsu Championship (known as Brasileiro) for the first time, Thévenon submitted 5x Brazilian national champion and European champion, Carina Santi of G13 BJJ with a rear naked choke, scoring 16 points to 0 and winning a silver medal in the super-heavyweight division.

[14][15] In June 2022 Thévenon won bronze at the 2022 World Jiu-Jitsu Championship taking place in California in the super heavyweight adult division.