One of the strongest (and last resort) of the papists is to extol Mary for the right decision, for her ACCEPTING the message of the angel. Unfortunately this is what the teaching of free will leads to, when brought to its logical conclusion. Bear in mind that the only absolutely free human decision ever made that pertains to God's will is Jesus' approval and submission under the will of God. Jesus didn't need grace, for he was the grace of God itself. Whereas humans can't help grace or willingly receive grace at the beginning, for they are of the flesh. Nowhere in the Bible are we told that grace is involved in a decision making process, it is always a "once done is done" thing. When Catholics speak of Mary, they always talk about grace, but in the end the determining (and which makes her praise-worthy) factor is her decision. They are directly saying that if Mary said "NO", there would be no Savior. The ONLY reason the Roman Catholic Church teaches something about grace is that if she was fully pelagian, noone would have need of her "grace-giving" sacraments.
"It was not easy to respond with a yes to the angel's announcement."
Pope Francis: I will entrust the destiny of humanity to the Virgin in Fatima