He didn't particularly want her to leave, at least not indefinitely, but he couldn't think of any very sound excuse to make her stay. He could have followed her, but that would have involved giving her the impression that he was following her, and he didn't want to be that obvious about it. It would also involve having to endure the company of her friend Miss Malfoy, which wasn't exactly high on his list of things he enjoyed doing.

If he couldn't prevent her going, perhaps at least he could leave her with a lasting image in her mind when she went. "Do as you like," he said with an offhand air, taking a step back to clear the way for her to walk past him and on to where she'd apparently sighted her friend. "But try to take care not to wear yourself out too much," he continued, leaning in to tell her quietly as she passed, "I want you ready for my cock tonight."