There was a small sound of surprise caught in her throat as her back hit the shelf, but she didn't disengage for an instant, pushing his shirt up a little higher and using the added stability behind her to pull him against her a little more forcefully, rolling her hips. She was wanton and desperate and if she could see how it looked, she likely wouldn't even recognize herself, but he'd gotten in under her skin somewhere along the line and she couldn't very well deny it anymore. Not now, anyway.