Elaida might be wrong, but your characterization of those who Egwene induced to swear to her is absurd. Nothing Myrelle did with Lan is against Tower law, and her fear of punishment does not prove her guilt, only the likelihood of her being punished, justly or not. In what sense is it possibly just to punish the "crime" of bonding a man against his will, by making four other men have their bonds passed to different sisters, equally against their will, and more obnoxiously so, because they had no share of the guilt of the crime? They seem to think it is a probable punishment, and the injustice of the sentence does not change its likelihood or severity, or lessen the desire of Myrelle & Nisao to shield their warders and themselves from such a punishment.

As for the committee sending the agents provacateur into the Tower, they did that when they had a perfect right to. There was no reason to tell the Hall, and good reasons to keep quiet. It was done before the Hall was elected, for crying out loud! Siuan's own argument that the committee had no right to second-guess her actions as Amyrlin when she had a perfect right to send Accepted out after the Black Ajah with writs of her authority is just as valid in the committee's defense, and their action was not nearly so radical.

If these were in fact crimes, Egwene is a hypocrite for covering them up, and absolutely no different than a magistrate or a prosecutor who accepts a bribe in return for delivering a verdict of "not guilty" or for dropping the case. If they were not crimes, she owes it to her "daughters" and to the Tower and justice to shield them from unjust punishment. Either way, she had no cause to blackmail them.