Rector Sabinia, nicknamed the Void Nun, was a prominent but reclusive member of the Marielda clergy and head of Memoriam College. After Samot, she was Christopher's most famous disciple. In her desperation to find a solution to the Heat and the Dark, she found herself swallowed by it. Miss Salary killed her with Calendar's knife.
Sabinia is an older woman with curly brown hair and dark eyes full of a deep sadness. She holds herself in a commanding fashion, and wears the casual version of what adherents of Samothes wear.
When Castille looked at her while wearing a spirit mask, Sabinia's face was nothingness.