Rodolphus was walking around the hall after a brief chat with Bellatrix and the Malfoys, drink in hand, when he suddenly spotted Nymphadora. He'd expected to see her here, and actually seeing her made him strangely happy. He grinned a little as he watched her; she seemed uncomfortable and like she'd rather be anywhere but here. She seemed to feel that way a lot lately and he was proud that he'd been the cause of it, once or twice.
He walked up behind her and leaned in, certain that she had not noticed him yet. "Missed me, Nymphadora?" he murmured into her ear, then stepped in front of her before she could panic and hex him, and gave her a wide grin and the spare glass in his hand. "Drink?"