Read it again. It definitely is a real queen.
"How much she hath glorified herself, and lived deliciously, so much torment and sorrow give her: for she saith in her heart, I sit a queen, and am no widow, and shall see no sorrow. (Rev 18:7)
This is from the Revelation, identifying the great city as Jerusalem (where our Lord was crucified):
"And their dead bodies shall lie in the street of the great city, which spiritually is called Sodom and Egypt, where also our Lord was crucified." (Rev 11:8 KJV)
This identifies Babylon as the great city, and as a "she""
"And there followed another angel, saying, Babylon is fallen, is fallen, that great city, because she made all nations drink of the wine of the wrath of her fornication." (Rev 14:8 KJV)
This identifies the great whore as Babylon the Great, Mother of Harlots; and as a woman:
"And there came one of the seven angels which had the seven vials, and talked with me, saying unto me, Come hither; I will shew unto thee the judgment of the great whore that sitteth upon many waters: With whom the kings of the earth have committed fornication, and the inhabitants of the earth have been made drunk with the wine of her fornication…. And upon her forehead was a name written, Mystery, Babylon The Great, The Mother Of Harlots And Abominations Of The Earth. And I saw the woman drunken with the blood of the saints, and with the blood of the martyrs of Jesus: and when I saw her, I wondered with great admiration." (Rev 17:1-2, 5-6 KJV)
This identifies the woman as the great city:
"And the woman which thou sawest is that great city, which reigneth over the kings of the earth." (Rev 17:18 KJV)
This identifies Babylon, the great city, as a "queen" in her heart. Keep in mind that God called her a whore:
"And he cried mightily with a strong voice, saying, Babylon the great is fallen, is fallen, and is become the habitation of devils, and the hold of every foul spirit, and a cage of every unclean and hateful bird. For all nations have drunk of the wine of the wrath of her fornication, and the kings of the earth have committed fornication with her, and the merchants of the earth are waxed rich through the abundance of her delicacies. And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues. For her sins have reached unto heaven, and God hath remembered her iniquities. Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double. How much she hath glorified herself, and lived deliciously, so much torment and sorrow give her: for she saith in her heart, I sit a queen, and am no widow, and shall see no sorrow. Therefore shall her plagues come in one day, death, and mourning, and famine; and she shall be utterly burned with fire: for strong is the Lord God who judgeth her. And the kings of the earth, who have committed fornication and lived deliciously with her, shall bewail her, and lament for her, when they shall see the smoke of her burning, Standing afar off for the fear of her torment, saying, Alas, alas that great city Babylon, that mighty city! for in one hour is thy judgment come." (Rev 18:2-10 KJV)
So, the "queen" is the great city, Babylon, Mother of Harlots, which was Jerusalem until 70 AD when she was made desolate. She became a widow alright. This is from Lamentations talking about Jerusalem:
"How doth the city sit solitary, that was full of people! how is she become as a widow! she that was great among the nations, and princess among the provinces, how is she become tributary!" (Lam 1:1 KJV)
Philip