Boulianne-Tremblay was born and raised in Saint-Siméon, down river from Quebec City, on the north shore of the St Lawrence River.
Gabrielle came out as trans in 2012. Her first volume of poetry, Le Ventre des volcans, was published in 2015. After appearing in a couple of short films, she was cast in : Ceux qui font les révolutions à moitié n'ont fait que se creuser un tombeau, 2016, and was nominated for best actress in a supporting role at the Canadian Screens Prize.
Her second volume of poetry, Les secrets de l'origami, was published in 2018. Her autobiographical novel, La fille d’elle-même came out in 2021 and was awarded a Prix des libraires du Québec, The next year she published a young adult novel, La voix de la nature.