She swallowed loudly, frozen in front of the Death Eater so calmly facing her. When she could feel her arms again, she found her voice, hidden somewhere in her throat. "Who are you?"
Yes, it was a stupid question. But she had nothing else in her head. And, knowing she looked like a fool now, she brandished the knife, a Muggle weapon, completely useless against a wizard. "Get out now."