She attended school in Fort-de-France, at the Convent Saint-Joseph de Cluny, at the College of Pointe des Nègres and Schœlcher High School, before leaving for Normandy pursue her graduate studies in Law and Modern Literature, at the University of Caen Normandy.

[2] The daughter of an urban architect and a doctor in geography, elder sister of 5 siblings, she is also granddaughter of Camille Petit, doctor became deputy of Martinique from 1967 to 1986.

[3] Petit was elected to the French National Assembly on 18 June 2017, representing the 4th constituency of Val-de-Marne.

[4] In the National Assembly, Petit sits on the Cultural and Education Affairs Committee.

In addition to her committee assignments, Petit has been a member of the French delegation to the Parliamentary Assembly of the Council of Europe from 2022 to 2024.