A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Author: Kyria d'Oreyn
Alijha and his friends rescued Lewin's sister Maigran and Charlin's and his sister Colline from the hands of four villains. During the attempt, they kill the men to protect themselves. When they return to their families, they are abandoned, because killing is incompatible with the Way of the Leaf philosophy the Da'Shain Aiel follow.
(Reference: The Shadow Rising, Chapter 25)