Since completing her training in acting at the National Theatre School of Canada, Marie-Andrée has appeared as an actress in numerous television series. In 2017-2018, she portrayed Louise Tétrault in the musical theater production Demain matin, Montréal m’attend at the Théâtre du Nouveau Monde (TNM) and throughout Quebec, under the direction of René-Richard Cyr. She received the Olivier Reichenbach Award for her outstanding performance as an emerging artist during the 2017-2018 TNM season, as well as the Félix Award for Show of the Year / Performers at the 2018 ADISQ Gala. In 2023-2024, she starred in the musical Hair, directed by Serge Denoncourt, at Théâtre St-Denis in Montreal and Salle Albert-Rousseau in Quebec City. In 2025, she will sing and act in Toutes ces elles, a musical directed by Martine Beaulne, and in The Wizard of Oz, a youth-oriented theater production directed by Frédéric Bélanger.

In 2020, she co-founded Les Créations Unuknu, which produced Agamemnon in the Ring (Théâtre Aux Écuries, 2022), a wrestling-themed theater piece in which she played Martine Francoeur, and Monstres (TDP, Salle Fred-Barry, 2025), for which she served as the director.