JeffLA - I understand your point because a + b = c; however, within the context of an eternal living God, one without beginning or end, it is very dangerous elevate a sinful human being to a position above God. In human terms, a mother is in a superior position to their child. No human is superior to God. Motherhood denotes having some hand in the child’s creation. Again, it is elevating a human being to a position they cannot hold. The semantics only works if we take the truth of the Word of God out of the equation.
Addition thought, Revelation is full of imagery and not a single word of it relates to Mary. If Mary held the office prescribed to her by the Cathoilic Church, I would expect for her to have been accounted for within that book.