Melinda watched silently, quietly letting the tickling charm go when Draco got in the man's face (it wouldn't do if he chose this moment to vomit). She paid attention to what Draco was saying, partly trying to learn what she might from him, partly just gathering information, learning what sort of information he cared about. She watched and listened until he was finished, looking from their victim to Draco when he came toward her. She smiled when he shrugged, a combination of bloodthirst and happy pleasure.
"Pleasure working with you," she said, then turned back to the victim.