A graduate of the Montreal Conservatory of Dramatic Arts in 2016, she was directed by Yves Morin, Normand Chouinard and Maxime Dénommée during her training. Gwendoline played Ginette in the play Enfant insignifiant ! by Michel Tremblay at the Jean-Duceppe Theatre in 2017 and 2018. 

She also shared the stage with Raymond Cloutier in the play Oléanna at the Alec and Gérard Pelletier Theatre in the summer of 2018. During the next summer, we saw her in the play Nelson, directed by Michel Poirier and presented at the St-Sauveur Theatre.

On the big screen, she played a role in the short film 47 fois le jour by Marie-Eve Juste, created as part of the carte blanche for the newest edition of the FNC (Festival of New Cinema), as well as in the short film Saint-Cécile, by Alexandre Dostie. In 2017, she worked under the direction of Yan Giroux in the short film Lost Paradise Lost. Gwendoline also presented, alongside her colleagues from the company La Pagaille, a collective creation in Saint-Malo, France.

On television, she has made appearances in Ruptures, Cheval-Serpent, Alpha et Oméga, Blue Moon, Les Honorables and Aller simple.