Rose frowned. She didn't like seeing him like this. "There was only one, Doctor," she said hesitantly. "And he killed himself." She couldn't help but feel a role in this. Her guilt was twofold; She'd been the one to wake it up, and she'd been the one one that ordered the Dalek to self-destruct. Seemed like she should only feel guilty for one or the other, but she regretted them both.