Mary didn't have any part of your Redemption. She carried Christ in the Womb, that's all.Yes, Mary's role was complete after the virgin birth had taken place. That was her role and she was certainly Blessed. John the Baptist had a role as did all the prophets and writers of the scripture. Mary is just one of many servants among others. Giving birth to the Savior did not give her the ability to hear and answer prayer, dispense ALL "graces" or soften God's justice towards the sinner.
Well, THAT should certainly be proven by Scripture, right? I'm waiting.......