She has to be a relative newcomer to the White Tower since Forsaken escaped not so long ago. So she should appear there about the time all our favorite witches did. There was a girl there who looked for the boys (Elsie or Lizzy, I do not remember the name now). The she has been entirely dropped out at the time of the coup d'etat. I think that could not happen to the plot. She should be Messaana. But I do not see the main question: Why Rand is so important to the DO? RJ should have some explanation of all the plotting around.