Queen of Evil? Nope, that title is firmly held by MLT. And Carol has long since ventured past this humble title IMHO:
From a couple of FDKs ago
Carol, when you're already the Empress of all that is Evil on his Earth, there is no need to stage a campaign for more. Unless you try to become Demi-Goddess of All that is Evil under the twin suns of Krypton and Terra.
Michael