A wise choice on her part; while Gai wouldn't be against telling her about his childhood eventually, this really isn't the time or place for that sort of thing. They're trying to relax, not make things even more tense.

He can feel how tense she is - he'd been expecting that much - and shifts his efforts to focusing on a single knot at a time, just trying to work out some of that tension there. "Tell me if anything I do hurts," he says, because he suspects that it will. She's really knotted up.