Gen 3:15 enmity total war none of his wicked works are found in herJust because she was a virgin and from the lineage of David how could we ever know if she ever commited any sin for after all we are all born with a nature to sin and we all have fallen short.
This is only speculation on your part because she is called pure, which means she never knew a man until after Jesus was born.
No where does Satan accuse our Lord of having a sinner for a mother, the accuser has no accusation
Lk 1:28 full of grace
The Lord is with her
She is blessed
Mary has to be holy and consecrated to be the dwelling place of God
Ark of the new covenant incorruptible wood immaculate purity
Covered with pure gold type of her immaculate purity and charity
Rev 12:1 clothed with the sun again immaculate purity
mother of God Lk 1:43
Mother of our salvation Lk 2:30