If you call the sinner Mary an impure vessel, then yes. What does the Bible say? Heb. 2:17 Wherefore in all things it behoved Him to be made like unto his brethren, that He might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.
Yes, Mary was a sinner. That's covered in the Romans 3:23 verse "Because none of us are sinless, all of us fall short of God's glory.".
>> “Because none of us are sinless, all of us fall short of God’s glory.”
What do sinner and sinless mean? What does “all of us” mean? What is the glory of God?
Has a newborn committed sin? Can a newborn be called a sinner?
If we say that, no, a newborn has not committed sin, then we have to say that all of us does not mean each and every one of us.
The Catholic Church teaches that the newborn does have sin, the inherited sin of Adam, and that baptism frees the baptised from this Original Sin.
And yet before Jesus was even born, Mary calls God her Savior. And this is why the Church teaches that Mary’s conception was special, immaculate, in that God stepped in and “saved” her from Original Sin, so that He would have a pure vessel into which the Holy Spirit could conceive Jesus. She, like the rest of us, needed the action of God to be freed from Original Sin.