[8] In 2011, Frappart began to referee matches in the Championnat National, the third division of men's football in France.

[13] Frappart would go on to be appointed to referee the final of the tournament which was contested on 7 July 2019 between the United States and the Netherlands.

[21] On 2 December 2020, she became the first woman to referee a UEFA Champions League match, between Juventus and Dynamo Kyiv.

[22] In March 2021, Frappart officiated the second leg of the UEFA Women's Champions League match between Atlético Madrid and Chelsea.

[23] Later that month, she became the first woman to officiate a FIFA World Cup qualifier, in a match between the Netherlands and Latvia.