Mary is the memory of the Church

In the words of the Holy Father, Mary is the memory of the Church. She lived the joyful events and those connected with the passion and resurrection of her Son. That was her prayer. 

If you pray the Rosary, you're praying with Mary. You are like the image of the Mother of God. You imitate her in that she preserved and meditated on the mysteries of the Son and the Mother. She is the memory of the Church, the memory of each one of us, who keeps these events in mind. 

Each of these events must be something real for us. By meditating on them, you come into contact with these mysteries, and they become a channel of grace for you.

Tadeusz Dajczer 

A l'école de la Sainte Famille, Ed F.-X. de Guibert, p. 204-205