The Witcher 3: Wild Hunt Edit
Yoana works in Crow's Perch, assisting Fergus Graem in the castle forge. She is capable of making master armor, though only using special tools of Clan Tordarroch, the clan which ruled Undvik until the arrival of the Ice Giant.
When the Nilfgaardian commander orders a suit of armor that can withstand a shot from a crossbow, Yoana decides to compete with Fergus to prove her mastery and superiority in the craft. She asks Geralt to obtain some gland acid from an archgriffin, as she hopes to imbue the armor with it.