"And how many stay because of you? You could do far more than I could to persuade them to leave. You're a role model now, Abigail. Witches around the country will look up to you. You must be impeachable."

Because witches will look up to her, maybe even emulate her. And because if she gets caught using dark magic, Sylvia will set her Guardians on her so fast the girl won't know what hit her.