Now that Egwene has executed a large number of Black Sisters and the rest have fled the White Tower, what do you think that the Black Sister who have escaped will do? Their head, Alviarin, is still alive so do you think that they will regroup somewhere to plot a counterstroke against the WT or break into smaller groups to sow chaos? This latter option could be a good strategy as most people do not know that much about Aes Sedai and will blame the WT and all Aes Sedai for any evil deeds perpetrated by the Black Ajah. With the Last Battle imminent, the Black Ajah could keep the forces of the Light busy with diversionary tactics.