Sisters of the Congrégation de Notre-Dame held a news conference Monday morning in Montreal.
Bussières was abducted in northern Cameroon on April 5 along with two Italian missionaries about 30 kilometres from the border with Nigeria.
Originally from Asbestos, Que., Bussières had worked in Cameroon since 1979. She was director of a school in Douvangar, and was working as a consultant at the time she was abducted.
Gunmen connected to Boko Haram are believed to be responsible for the abduction of the three.
Boko Haram fighters have killed thousands of people in the group's fight to carve out an Islamic state in neighbouring northern Nigeria. They have increasingly carried out attacks and kidnappings in northern Cameroon.