Millicent looked completely... deranged. Justin had never seen her quite this angry before, her face was contorted with rage, and she looked at Antonin like she would like nothing more than to do the things that he suggested he do to her.
He mentally braced himself for the attack, knowing it would not be pretty. He hadn't expected her to completely vanish into thin air, though. He stared, blinking at the empty space where she had just stood. Dolohov's words about powerful and undisciplined snapped him out of it, and he looked over at the other man. Who did not seem phased by this turn of events at all.
"Forgive me for being daft, but what the hell was that? I figure your wards are the reason she's... in the dungeon, but what did she try to do to you?" The spell she'd shouted before her departure was completely foreign to him.