Tamalane is one of the Duncan Idaho ghola's first chief instructors on Gammu in the events before Heretics of Dune (1984). Tamalane is one of Mother Superior Darwi Odrade's advisors in Chapterhouse: Dune (1985), and accompanies Odrade, Dortujla and the acolyte Suipol to meet the Great Honored Matre Dama on Junction as Miles Teg leads a force to attack Gammu. Tamalane and her party are eventually slain by the Honored Matres, but the Bene Gesserit conquest proves successful with Murbella left as leader to both the Bene Gesserit and the Honored Matres.
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