If you ever wondered how an honor-killer rationalizes killing a sibling, here is an example of the breed. He regrets “losing his sister”, but blames her and his family for making him hunt her down at a battered women’s shelter. There isn’t a completely absence of human feelings, rather an absence of responsibility. He isn’t incapable of feeling, just incapable of exercising moral awareness. He is sad that his sister is gone and sad that he had to kill her, but does not truly regret his part in any of it.