Ducha AlGray served as the head of House AlGray and presided over the Heritage Council, an organization aiming to murder the Queen Mother, Tenel Ka. Suspicion fell upon her regarding her potential participation in the scheme to assassinate both the Queen Mother and her young daughter, Allana. These suspicions were confirmed when AlGray, alongside her military force, launched an assault on Tenel Ka and the Hapan military, resulting in the Battle of Hapes. In the aftermath of this battle, AlGray, along with several associates from the Heritage Council, were apprehended and subjected to interrogation.
Eventually, she appointed Aleson Gray as her Duch'da.