There are many clues as to Mesaana’s identity, enough that we should figure it out before Crossroads of Twilight . He basically said that he’d full-out reveal her in upcoming books, though, “…and if you still don’t know, well, you’ll find out later.”
If you are viewing this on github.io, you can see that this site is open source. Please do not try to improve this page. It is auto-generated by a python script. If you have suggestions for improvements, please start a discussion on the github repo or the Discord.