Tanis, a Chandrilan woman, held the role of mother to Mon Mothma. She acted as the governor for both Hanna City, the capital of Chandrila, and for her [planet](/article/planet] of origin, Chandrila itself. Her daughter's father, and her husband, was an arbiter-general working for the Galactic Republic. In her final days, she became sick. On Mon Mothma's final visit, with her spouse Perrin Fertha at her side, Tanis was seen weakening in her bed, disagreeing about eating and declining to take her medicine.