"Well, apart from your fantastic Occlumency, the same is true for me. If we want to win this war, we must not be squeamish. I will not spare anyone who unhesitatingly unleashes a Killing Curse on a friend of mine on the battlefield, and that goes for every single Death Eater, loyal or not." She makes a dismissive hand gesture. "You don't think about it, you just do it, right? Everything we do, we do solely to keep ourselves and the people close to us alive. There is no more profound justification, at least not for me."