In February 2023, she was runner-up in the 400 metres at the French indoor championships in Aubiere.[4] She was a silver medalist in the 400 metres hurdles at the 2023 European Athletics U23 Championships in Espoo.[5] At the championships she also won gold anchoring the French team in the women's 4x400m relay.[6] She won the French national title in the 400m hurdles in July 2023 in Albi.[7]
She competed for France at the 2023 World Athletics Championships in Budapest as part of the French mixed 4 × 400 m relay which set a new national record in 3:12:25 and finished in fourth place in the final.[8]
In May 2024, Maraval moved to second in the all-time French list for the 400m hurdles, behind Marie-José Pérec, by running 54.44 in Marseille. In doing so she also achieved the qualifying standard for the 2024 Paris Olympics.[10] On 10 June 2024, she ran a personal best 54.36 to qualify for the final at the 2024 European Athletics Championships in Rome. In the final she came away with the silver medal behind Femke Bol, and lowered her personal best to 54.23 seconds.[11][12]
On 30 June 2024, she won the French national 400m hurdles title in Angers in a time of 53.71 seconds.[13]