Jesus’s divinity is not dependent on Mary’s being sinless. Quite the contrary, the reason for this sinlessness is:
1. in God’s presence, sin cannot stay, it is destroyed.
2. Jesus in the womb was still Jesus Christ, Lord and God.
3. To protect the bearer of God, she had to be made filled with grace and she had to be made free of sin — for her to be able to bear the Lord
Now her own parents being sinful did not affect this as Mary is just a creature, and sinlessness being in contact with sinfulness does not affect sinlessness (e.g. a newborn baby in contact with a sinful mother), but the blazing power of God that destroys anything that is tainted with sin, if that is kept in a box/womb which has even a slight stain of sin, that box/womb will be destroyed.
~ by Cronos
And the numbe rone problem I have with th e pro choice crowd-
is they must deny the fact that the babe in Elizabeths womb leapt for joy when John heard Mary’s voice. A baby at six months after the egg fertilized knew Jesus had been conceived—the Word had become flesh and was tabernacling among us.
Mary responded to the prophetic blessing by Elizabeth in like
manner providing a second witness that Scripture had been fulfilled.