Motherhood of Mary does not in the definition of terms mean that she was superior to the Godhead of her son.
No mother is the sole progenitor of her children. So it seems like a misshapen use of the word mother that is used to be a problem here.
If God can die for sins He can certainly be born to a mother for our salvation. To deny one reality is to be a hypocrite to the other.
Catholics have made Mary the focus when the only need for Mary was to give Jesus a human body...Jesus wasn't born to a mother for our salvation...Jesus died for our salvation...