From Tar Valon Library
Author: Annouk Vinkona Ùlfanna
Bernaile is one of the ten sisters sent from Salidar to Tar Valon to spread rumors about the Red Ajah and Logain. When Zerah, another Aes Sedai of the White Ajah, is discovered, she is ordered to bring Bernaile to Seaine, who heads Elaida's investigation against the Black Ajah (TPoD, Ch. 26).
"Very well. Zerah, you will bring Bernaile to my rooms this afternoon." There were two from each Ajah excepting the Blue and the Red, it seemed, but best to begin with the other White. (Seaine during the interrogation; The Path of Daggers, Chapter 26).
"We've already made one of them, Zerah Dacan, take the same extra oath Talene did, and told her to bring Bernaile Gelbarn to my rooms this afternoon without rousing her suspicions." (Seaine about discovering the rebels; Winter's Heart, Prologue).