Unfortunately, their movement was limited by the nature of what they were doing here. If it became a real problem Quentin could have Caitlin move -- this would be a lot easier if she were bent over and facing away. But they were making it work for now, so he just sat back and let her move, keeping his finger inside her, moving it a little if she ever paused. He kept his eyes on her face, looking for discomfort as he started to rub a second finger along her rim, teasing it without pushing in yet.