She earned a BA in plastic arts from the Université du Québec à Trois-Rivières and was a lecturer there for ten years.
Delaunois moved to Montreal in 1982, where she worked for the Quebec consumer magazine Protégez-vous [fr].
Delaunois worked for the publishing house Les Éditions Héritage [fr] for ten years as director for several of their collections.
In 1998, she became literary director for youth collections at Éditions Pierre Tisseyre.
In 2004, Delaunois founded her own publishing company Éditions de l'isatis.