Normally she hunted on her own, and wasn't entirely used to following someone else's lead or orders. If it was anyone else but Barty, she might have bristled, but with him she went along easily.
Waiting until he moved, she was right alongside him, silently walking down the street until they came up behind the pair. There was a brief moment when he moved for the woman instead of the man and she smirked inwardly. He'd left her the larger and stronger of the two. She kind of liked that. Coming up behind him, Chas echoed Barty's motion, one hand coming up to cover the man's mouth and the other grabbing his arm and pinning it behind his back.
"Hello handsome," Chas said lowly against the man's ear. He began to fight back instantly and she twisted his arm up, gaining a muffled groa from him against her hand as she said, "Now now, play nice." She was strong, but he was big, and she didn't want to risk causing a scene if he really decided to fight. Which was why her favorite knife was in her hand instantly, and pressed up against his back a second later. "You gonna rethink that fighting thing now?" The man stilled, and Chas smiled, her hand still over his mouth. "Good boy."