I didn't say that God needed sin, or depends on it or is powerless against it (sorry if my post was unclear). But He certainly did not need a sinless mother to bear His sinless Son. You seem to be saying that Mary being sinless shows God's power. But Jesus Christ being conceived and born sinless shows it, and is far more in agreement with what we find in God's word, where we are not told anywhere that Mary was sinless.
That is your interpretation, not scripture.
I showed you in Genesis that she is the enemy of Satan
The Hebrew word for "enmity" in Genesis 3:15 is <e>אֵיבָה</e> (pronounced ey-bah or eivah). This noun denotes a profound, deeply rooted hostility, conflict, or an enduring negative attitude, not merely dislike or temporary disagreement. In Genesis 3:15, God establishes a fundamental enmity between the serpent and the woman, which is understood as the beginning of a long-term spiritual conflict between good and evil.
If Mary is evil aka a sinner, she cannot be in conflict with evil, if she is susceptible to it. When we sin, we are deceived into thinking sin will bring us good, even though it is a lie. Mary, being the enemy of Satan, knows that sin brings no good. She is not deceived, and chooses the good in subjecting herself to God.
We read in Canticles(song of Solomon) that she is the perfect one. The daughters saw her and declared her most blessed.
In Luke we read that she is the Kecharitomene, which carries connotations of loved before hand.
We know she was in the mind of God immediately after the fall of Adam and Eve, because God told it to them.
In Luke we also read that her soul magnifies the Lord. Does sin magnify the Lord? Scripture does not say that. If she was in the mind of God in the Garden of Eden, it is reasonable to conclude, that God being God and all knowing, that He had her in mind before the creation of the world. We read in Proverbs 8, that wisdom, who played before God, is depicted as a woman.
Song of Solomon describes the great love God has for her.
If God left her a sinner, then why did she need to be a virgin? If Christ could break forth from sin, why could he not be born of a naturally married woman?
The sign of her virtue is that she never exalted herself. She proclaims her low estate and declares everything she has comes from God. She says her soul magnifies the Lord, and all generations will call her blessed. Her last words in scripture were , Do whatever He tells you
There is scripture upon scripture that shows us to humble ourselves as little children and thank God that He fulfilled His promise to send the woman, the promised enemy of Satan, to become her seed and to redeem us with His own blood
To say that she is a sinner like the rest of us in league with Satan, brings dishonor to God by saying He is powerless to bring us Satan’s enemy