It's best he doesn't notice, because she's all smiles when he opens the door for her. And then, suddenly, inexplicably, she leans up and places a soft kiss on his cheek. It's an almost intimate thing for her, to be so close to someone - both physically and emotionally - but she finds she can't not do this. Her cheeks are rosy as she pulls back and offers him another smile and a whispered "goodnight" before she disappears turns to disappear into the night.