He wasn't going to let it go, was he? Heather wasn't some dark witch out there to kill people. She was out there trying to survive and just keep herself safe. When Demelza met with her she seemed smart enough to keep herself alive but innocent enough to not go murdering people on her own account. It wasn't fugitives doing the killing; it was the people in charge.
"Bloody hell," was all she said about that, especially since his other question distracted her. "What?" She asked, looking around to see what he was seeing. Of course, he probably saw her toss the journal at the last second. Damn. "Nothing," she clenched her jaw, set on keeping that a secret, too. Though it would be amusing to see the effects.