Eighdruh's early life was fairly uneventful although she achieved much success as one of the digirs' Erimasarlu; the branch of the digir military structure whom tasks of espionage and law-enforcement among its non-religious caste are delegated. However, when her sister Rosemaris was notionally exiled from their pillar, Eighdruh and her wife Astrid attempted to leave with her. While Eighdruh was successful, Astrid remained behind when she caught wind of strange happenings in the Pillar of MUL-NABU's lower reaches. Eventually, they returned to discover strange monsters putting the city to the claw. Meeting up and reconciling with her wife, they managed to regain control of the city.
Following this, she aided the Ard Righ in his relations with the digir people, becoming a person of renown by achieving the title of Warrior-Orator. This title allowed her to supersede the digir senate and commit them to the war during the Year of Invasions. With her people by her side, Eighdruh lead a coalition of digir fighters during the liberation of Ynis-Gwysrin and the retaking of Manannan Port. Wishing to lead a quiet life, she became the co-owner of Brawnheart along Zaidu where she and her wife take up residence with their child, never far from the Ard Righ and ready to answer the call to arms.