 When Murbella's forces retake Buzzell in "Hunters of Dune" (2006), Murbella shares minds with Corysta, learning all she can about the situation on Buzzell but also experiencing Corysta's past.She recognizes Corysta's value and loyalty and puts her in charge of the soostone operation.Corysta manages to improve the efficiency and output of the operation, which is the Sisterhood's only source of revenue besides melange and is essential to their plan to amass arms for a final battle with the Unknown Enemy.