From the Youtube post:
For our Conference on Spiritual Battle of Our Time, Fr. Casey gives the fourth talk which is on Our Lady’s role in this battle. He first gives and example of animosity toward Mary from Protestants. Jesus sees us in two ways, as we are and as we ought to be. Our goal is for us make these to ways as similar as possible, and so become saints. Mary is the perfect standard in this regard. We must become like her and stand at the foot of the Cross to have our hearts pierced with Jesus’ and hers.