Mary: Mother of God, Co-Redemptrix, Co-Mediatrix?

Mary is an integral part of God's plan of Salvation. How so? Can we actually call her the "Mother of God" and why is this January 1 Solemnity of the Mother of God a Holy Day of Obligation? What about Co-Mediatrix and Co-Remptrix? What do those titles mean? Join Fr. Chris Alar as he explains the critical role in knowing who Jesus is and growing closer to him.