Breakers

From the introduction:

He had said it would be good—that they would see to it. Well, she would see to it. They better not start anything. They just better not. She did not know if her gift had come from the lord of light or of darkness, and now, finally finding that she did not care which, she was overcome with an almost indescribable relief, as if a huge weight, long carried, had slipped from her shoulders.