Her full name is Polinice, but is usually called Polyi. She is Savn's younger sister, and therefore also a Teckla. She assists her brother in healing Vlad Taltos during the events of Athyra. She also helps Vlad rescue Savn from imprisonment by Loraan, and is present during the fight between the final fight between Ishtvan and Loraan on one side, and Vlad (and Savn, to an extent) on the other.
"Killing is all he knows how to do."