User blog comment:AgnesFlether/"The kindness of strangers" episode review/@comment-5086871-20121208232922/@comment-5657895-20121209021837

While that's all very moving, it doesn't change the fact that Aithusa sided with evil! Kilgarah won't kill her, I don't think, but he would have every right to. Merlin is his friend, and Aithusa endangered Merlin's life and the lives of thousands of others when she saved the Witch.