Poor logic and it is adding to scripture what cannot be added since it delves into heresy. With God all things are possible, His revelation in scripture tells us precisely what we need for salvation. Not one word is written that speaks of ANYONE other than Christ, leading a sinless life. To say Mary was the second to do so is fundamentally wrong because it contradicts scripture.
Therefore God made Mary free of Original Sin so that she would be a suitable vessel, ark, portal, gateway for Him to enter humanity. God has used sinful man in myriad ways, He even used Pharoah to be His vessel. Do not put the Almight in a box that He cannot emerge from.
We regain it through Mary in the Body of her Son, Jesus. Pure heresy. Only Christ redeems. Grace is given by God alone, not Mary.
Mary's gifts and graces without first recognizing that she is the Mother of God Almighty.
But she is NOT the mother of God. She is the mother of Jesus, the man. God has no father, but Christ made Himself subject to the will of the Father.
Hbr 2:7-9 You made him a little lower than the angels; you crowned him with glory and honor and put everything under his feet." In putting everything under him, God left nothing that is not subject to him. Yet at present we do not see everything subject to him. But we see Jesus, who was made a little lower than the angels, now crowned with glory and honor because he suffered death, so that by the grace of God he might taste death for everyone.
But she is NOT the mother of God. She is the mother of Jesus, the man.
Congratulations! You agree with the Catholic Church!
Amen.