Setzer has never gotten the impression when she kisses him that she is angry at him. It's always something else, hanging over her head and just out of her reach - she has to show a cold and unfeeling face to the world or she will be called overemotional, perhaps, so she hides the anger and grief and only lets it show when she feels comfortable.

It wasn't a bad thing, he mused, kissing her back as happily as he could manage; if nothing else, it meant that she obviously trusted him enough to let him see what she hid from the rest of the world.