Ardeth Platte, a Dominican order nun who fought for nuclear disarmament and later served as an inspiration for a character on the Netflix show “Orange Is the New Black,” died Sept. 30 at the Dorothy Day Catholic Worker House in Washington. She was 84.

Sister Platte, who often worked in tandem with her best friend and frequent collaborator, Sister Carol Gilbert, spent years in prison for nonviolent civil disobedience in opposition to nuclear weapons and war. Gilbert confirmed the death but did not provide a cause.