The Pope Emeritus writes about Mary and the Presentation of Christ in his book Jesus of Nazareth: The Infancy Narratives. Simeon told Mary she would suffer-her heart would be pierced. Such are the paintings of the Sorrowful Mother we see throughout the centuries.
The Pope Emeritus notes that Mary had true "com-passion" with her Son. And, that is "quite unsentimentally assuming the suffering of other's as one's own."
This is another way to describe Reparation. Now, Mary is then the "Co-Redemptorix" as some theologians have explained through this compassion.
If one is called to Reparation, one takes on a little bit of this compassion for others and suffers with that person in order for them to reach heaven.
Those who are in difficult relationships understand this concept.
To be continued...