You are redefining the term “mother of God.”
That is fine, if you want to divorce yourself from its historical use and introduce confusion.
What would you say if i told you that Catholics (and others who use the term) are not asserting that Mary pre-existed God?
Do you know what we mean by the term? Or are you content to reject it without knowing?
Wow! I thought we were supporting our positions from scripture? You need to stay with our original deal.