It was the truth, but not entirely. At some point, she moved past survival and became a Death Eater simply because she wanted to. Harry would never have understood her decision. That was fine. She'd given up any hope long ago that those she cared about and loved in the past would ever forgive her for what she'd done. A day would come at the end of her life where she would have to answer for her crimes. It was a sobering thought, but one she tried not to dwell too much on.