Sister to Rakhshan Arjoomand. Assisted him in his escape from Chenja with the aid of her friends. Unfortunately, while moving him across the border, their vehicle encountered a mine, and it's believed there were no survivors.
From GOD'S WAR:
It was one of his sisters, Alys, who helped Rhys escape the second time. She called her friends, members of Chenja’s own underground, and they had gotten him as far as the border. At the border, their vehicle hit a mine.