My bad Pelagianism not Arianism. (mixed up my darned heresies).
http://orthodoxwiki.org/Pelagianism
This teaching was opposed by St. Augustine, the leading figure in the North African Church at that time. While Pelagius, in his claims that humans can (alone) do what God requires, had emphasized the freedom of human will and the ability to control one's motives and actions under the guidance of God's law, Augustine insisted that no one can control his or her own motivation and that person requires the assistance of God's grace if he or she is to will and to do good. Only with the help of divine grace can an individual overcome the force of sin and live rightly before God.
But it's seeming to me like samiam only said Mary was freed by what God did for her, not what she did for herself. IS ther some expression or hrase she used that set off your heresy (Uh, I mean haeresu) alarm?