Alteran descendant, Ver Egen village woman and closet historian. Sallis had a husband, Harrid. Her body was taken over by Vala Mal Doran, confirming their beliefs that the stones they had hidden were communication devices.
Vala, in Sallis's body, was burned to death on the Ara amid the watching Ver Egen population. Her body was restored by an Ori Prior. She traveled to the city of Celestis where she was kept in a dining hall.
When Daniel Jackson had finished his discussions with the Doci and Ori, Vala / Sallis was returned to Ver Eger. After uncovering Fannis as a heretic for believing in a history that contradicted the Book of Origin, she and her husband Harrid were placed on the Ara and killed.
Avalon, Part 2 - Sallis's body is invaded by the mind of Vala Mal Doran.
Origin - Sallis, still suppressed by Vala's presence, travels to the plains of Celestis, and back again to Ver Eger only to be killed on the Ara.