Well it's a Catholic term I do know that much. She was the mother of God (at least in the flesh if you believe in the trinity which you don't) or mother of Jesus however there is a cult of Mary that believe that she is a Co-Redemptrix along side Christ which there is no biblical support for. The flip side is Mary gets dragged through the mud by protestants when really she is the perfect example of an obedient servant of God just my take of on this. Lastly in a very real sense God has no mother for He is self existent.
PS: J-Dub have an historical validated history of aggressively starting trouble with Catholics. They used to walk around with bull horns yelling at Catholics. So I thought J-Dubs were all about peace