The first RHSJ community founded in Mexico came from a project of Sister Imelda Roy, who in 1971, felt strongly called to give herself in service to the poor. Thus from 1972 - 1985, she worked with other RHSJ in Peru. Then she felt called by poor and disadvantaged persons in Mexico; in 1988, she was granted permission, on an experimental basis, to live in a very poor area of Mexico. For four years, she was the only RHSJ in Mexico; she remained hopeful that a community group would one day be formed there for service to the poor, in fidelity to the dream of Jérôme Le Royer and in order to pass on the spiritual heritage he bequeathed through the mediation of Marie de la Ferre. The dream of Sister Imelda took time to mature, but the small seed planted on Mexican soil eventually bore fruit.

On January 15, 1993, Sisters Estelle Mazerolle and Laurette Brideau were named to Mexico to form a community with Sister Imelda and six young Mexicans. Since then, RHSJ have been present in a poor section of the big city of Mexico; they visit the sick in their homes, help in pastoral ministry, work with youth and regularly go on mission into poor and distant villages. Three young Mexicans, who came to know the congregation through the presence of Sister Imelda, are today RHSJ.

On December 17, 1993, Sisters Alma Roy, Claudette Haché and Edna Thomas opened a house in the city of Chalco, two hours from Mexico City. They soon moved to Huitzilzingo, a village 10 minutes away from Chalco, to a larger property. In May 2000, the official opening took place of a nursing home that the congregation had built for 20 abandoned or needy elderly persons. In 2003, ten years after the arrival of the RHSJ in Chalco, the community of Huitzilzingo was formed by Sisters Colette Lemieux, Léona Landry, Claudette Haché, Edna Thomas and Guadalupe Méndez Acatitla. They work in the Nursing Home, visit the poor and sick in their homes, meet homeless people, are active in parish ministry and with youth.