[BipolarBob]

The are different senses in which a person can be "queen."
But Queen Mother and Queen of Heaven goes way beyond our paygrade to assign. To use human logic to assign Mary some Queen Mother title is abuse of Scripture. Rev. 12 is about the Church (see my post 125).
So one could note that Peter was given the Power of the Keys
So were all of the other Apostles (exception Judas). The Key to Heaven is the knowledge that Jesus is our Redeemer.
But Peter has a role given to him by God
As do we all.
is listed first in the many listings of the Apostles in the NT
"So the last will be first, and the first will be last." Matt. 20:16

[Mrs. Don-o]

"But Queen Mother and Queen of Heaven goes way beyond our paygrade to assign."

True --- but she's not put in a position assigned by you or me. Assigned by God.

"Last shall be first, and the first, last" is one of the really winsome and beautiful reasons it's so great that Mary, the handmaid of the Lord, is the woman with the crown of twelve stars (Rev. 21). She's the humblest of them all. It must please God's heart to raise up the lowly like this.