She had hard eyes. She was lean and the same height as Egwene al'Vere.
She was from Arafel. She stood high in the Aes Sedai hierarchy.
She had a reputation for the strictest, and often harshest, interpretation of the law. She adhered to the letter of the law, with no sense of mercy.
She said that Egwene's judgement would require the use of a High Court, with the Hall sitting to deliberate on the verdict. Katerine Alruddin suggested that she might be called to be the Chair of Pardon, which Berisha certainly didn't relish, especially since the Chair sometimes shared the same fate as her defendant.
She chastised Katerine for scaring Nicola Treehill by saying that novices should be guided and not bludgeoned.
Katerine and Barasine made implied threats towards Berisha and Berisha left Egwene in their custody. Egwene thought that no woman who gave into fear so easily could ever have obtained the shawl and that something must have been very wrong.
After Egwene, as the new Amyrlin Seat, had Faile go to the Tower and recover the Horn of Valere, Berisha was ready to open a gateway for her, transporting the Horn among other goods in a cart. In that moment Berisha was surprised by a bubble of evil and so she opened the gateway wrongly, opening it in the Blight instead. Shortly afterward, she was stabbed to death by Aravine, a Darkfriend who wanted to erase any sign of Faile and her expedition.