There are two Queen's of Heaven. Kind of like when a Queen gives birth to a Prince, then that Prince becomes King. The King takes a bride, and that Bride is his Queen. The King's mother, though, is still Queenly. She's got to be, her son is a king.
Jesus is the King of Kings. He's King of Heaven, Earth, and Hell (Hell's not "Satan's Domain" it's his prison. People often forget that. "King of Hell" sounds spooky, I understand, but my point is that God's Sovereignty is Ultimate, and knows no bounds.) Jesus was completely sinless, and one of the Ten Commandments is "Honor thy mother and father." Jesus honors his Mom. Jesus was born of Mary, and if He is King, how can she not be a Queen in her own right?
The Second Queen is us, the Church. Those who confess the Lord Jesus as their Savior and mean it. We are, figuratively, the Bride of Christ. We're God's spouse. We, as the body of believers who follow Jesus, are the Princess who will one day be rescued by the King and made his wife; made a Queen.