Tso Sook Drane served as the wife of Armo Drane, a farmer found guilty of an offense. He was being shipped to a detention moon on the Imperial prison barge known as the Purge. Armo penned a letter intended for her, trying to get a guard by the name of Wembly to deliver it. Within the letter, he conveyed his best wishes to both her and an individual named Jollar, while also expressing his desire to one day clarify the reasons behind his criminal behavior to them. Given that the letter was found on the Purge following the devastation of its population by a plague, it's improbable that she ever received it. Subsequently, it was made available for public viewing for research purposes, specifically concerning the historical context of the Purge.