A lover of books, Sheska took a job at the National Central Library so that she could earn the money to care for her sick mother. This job did not last long, however, as she found herself reading the library’s books more than doing actual work. Some time after she lost her job, the library was destroyed by a fire.
Sheska was later visited by Edward and Alphonse Elric, who were looking for the research journal of Doctor Tim Marcoh. Although she confirmed that Marcoh’s book had been lost in the library fire, her ability to perfectly remember any book she had read allowed her to make a new copy for the Elrics. Major Maes Hughes of the Amestrian military learned of Sheska’s assistance of the Elrics, and asked her to reproduce court-martial records that had also been lost in the fire. This led to her being given a new job in the Amestrian military’s records department.