Sister Alacoque Hayes was a lay teacher for five years before she took up her religious vocation in 1926. Over the next three decades, she taught in several local schools as well as served as the Superior in both Arthur and Brantford. In 1960, she was elected General Superior of the Hamilton Congregation. Over the next twelve years, Mother Alacoque Hayes presided over a time of transition following Vatican II and oversaw the opening of an international mission in Guatemala and the Mount St. Joseph Centre (a residential facility for emotionally disturbed children) in Hamilton