Is it a fact that Mary the Mother of God in the Christian belief is actually based on earlier pagan beliefs?

that God was a female? And that thus to title Mary as the Mother of God’s child is a demotion for her? NOTE: If this question is deleted I will know that someone’s faith is threatened. I mean no disrespect, but you do realize that neither the Christian nor the pagan beliefs are provable, don’t you?

Some of the early Christian paintings of Mary with Jesus are direct tracings or paint-overs of Pagan Goddesses.