How can mary be co-redeemer with christ when Jesus said no one comes to the father but by him?
How can mary be sinless when Jesus said all have fallen short and none are righteous?
Do you really believe that mary was immaculately concieved without original sin?
Was Mary a virgin her whole life? And if so, why does the scriptures refer to James as the brother of Jesus?
Do you believe that Mary is the queen of heaven? And if so, why is she using a title originally ascribed to the Godess astarte/Ashteroth?

Thats good for starters.