Or, worse, she might even be given back to Antonin for more "training'. She wasn't sure she could endure more of that. Her mind wasn't what it used to be. Even if she tried to ignore the signs, she was no fool. Much more time amongst the Death Eaters and she was at risk of being completely insane. Unlike most of the poor souls who found themselves in a similar position to hers after the crushing defeat of the Light side, of the "good" side, she understood enough about psychology to know what brainwashing looked like.