Her books include I Am Not A Number and Heart Berry Bling, both of which centre the experiences of Anishinaabek people, discussing the Indian Act and residential schooling.
[6][7] I Am Not a Number is based on the experiences of Dupuis's grandmother, Irene Couchie, who was forced into residential schooling at age eight and, among other attempts to have her forget her ancestry, is forbidden to speak her native language, Nishnaabemwin.
[11] Despite positive critical reception, some parents found that the book's contents were inappropriate for children, especially when used as required reading without a trigger warning.
[13] Dupuis's second children's book, Heart Berry Bling, illustrated by Eva Campbell, was published by HighWater Press in 2023.
Granny also shares lessons associated with strawberries, also known as heart berries, discusses Indigenous history related to the Indian Act, and explores the interrelationship between the three.