[He can't make any assumptions as to what she's been accused of doing--or has actually done--and it's rough to comfort someone when you don't even know their cultural norms or their psychology. But when all else fails, basic human touch tends to reassure most people, and she doesn't seem to belong to the type that would be put off by it. He places a hand on her shoulder, keeping his distance so it doesn't come off as anything but comfort.]