In 1821, Raizenne was named assistant to the superior.
In 1821, Bishop Alexander Macdonell invited the Grey Nuns to establish a school for girls in Upper Canada.
Although the nuns refused this offer, Raizenne was interested and, in 1828, was released from the Grey Nuns by Bishop Bernard-Claude Panet.
Because she was French-speaking, she decided to establish the school in Sandwich (later Windsor) in the Western District.
By July 1929, the school had been established with 50 students and several candidates for the new order had been identified.However, Raizenne died in Sandwich a few weeks later and the order's novices went elsewhere so, in the end, she was the first and only member of the congregation.Her aunt Marie Raizenne was a superior in the Congregation of Notre Dame of Montreal.