She grinned up at him, and impulsively leaned up to kiss his cheek. It was a simple gesture, from friend to friend, but she hoped she hadn't over stepped. It had felt like the right thing to do at the time, and Lily had never been good at ignoring her instincts.
"Thank you Severus," she said. "I should go find James. Have a good afternoon, Severus." She smiled at him again, and then headed off to find her husband.