[3] In the year 1648 she was among those of the Order who responded to the appeal to help the canonesses in Quebec who had founded the Hôtel-Dieu there for the needs of the colony.

[3] After Catherine's arrival, she began the task of nursing the sick in the hospital of the monastery, attending to both their spiritual and physical needs.

The superior of the hospital later testified that she and the other canonesses could tell that Catherine would spend long periods in prayer and undertook severe mortifications of her body in support of her spiritual mission, to the point of endangering her own health.

Due to her self-sacrifice for both the European settlers of the colony and for the native inhabitants, Catherine came to be honoured as one of the six founders of the Catholic Church in Canada, representing the contributions of the Augustinian canonesses.

[4] Catherine was declared to have lived a life of extraordinary virtue on 9 March 1984 by Pope John Paul II.