It bothered him that she wasn't using his last name any more, but he said nothing, distracted by the rest of her words: "Who can see through me?" he repeated, that was preposterous, this woman claimed she has seen through him? It was ridiculous. "Right." It was a scoff mostly. Charity Burbage had no idea what she would see if she really could read him, and sincerely enough, Severus was happy she couldn't.
"Then I wouldn't say talking cannot kill." he said simply and shook his head.