From Episode 103, Geillis listening to Claire talking to her husband, Arthur about a boy confessing to theft and the expected punishment Father Bain in arguing for. Geillis cares not about the boy. It seems she is only in to do anything that can advance her own position.
Finally she decides to step in (hardcore eye roll a twelve year old would be impressed by) after Claire’s exhortations.
Oh beguiling Geillis.