St. Madeleine Sophie gave the novices a formation that was strong, solid, scriptural and liturgical. Union and conformity with the Heart of Jesus were essential concepts in their formation. They were to become saints through total surrender to the Heart of Jesus. They were to be spouses of His Heart.
It is good to note that Sophie means the whole person of Jesus when she speaks of the Heart of Jesus. The heart symbolizes love and is the center of the person.