Marian honestly didn't think that he would physically harm her. Of that she was likely safe, though she also didn't know how his tastes ran in the bedroom. She'd never wanted to even consider that sort of thing.
Would he actually have stopped if she told him she was in pain?
It was a week ago that she had been rescued from torture, and her body still bore the marks of that. "Just-" she licked her lips, nervously. "Just be careful of the burns." They were covered, but the idea of too much friction made her flinch.
No, he wouldn't hurt her intentionally. He'd saved her from that pain and she was still grateful, even if that feeling confused her.