Had she known what he was thinking, she would have disagreed. When Dorcas was being held in the basement, it had been very clear to her that Voldemort had no idea if she knew anything or not. She was being held simply for having been seen with Regulus... for the risk that having a friend on the other side had posed. And it had suddenly all been clear to her why he had insisted on keeping their relationship a secret for all of those years.
She took deep, slow breaths as she listened to his story. They had found the place she'd been tortured? That made her stomach churn a bit. She hadn't expected that, and even Dorcas had no idea where she'd been at the time, though she hadn't forgotten a single detail of the basement. Even just the thought of it made the smell burn in her nostrils. She couldn't help but frown, deeply.
"That's because they found a body," her voice was rigid. She was relieved, at the very least, that her trick had worked, though the thought of what she'd done made her feel very ill. She tugged at his hand a bit, just to reassure herself that he was still there... that he didn't some how know what she had done and had changed his mind about her.