He knew better . He knew . All it took to keep him from repeating the pitiful plea for an end was a backhanded slap , the cold rear of her palm striking the side of his face hard enough to silence him temporarily , the werewolf dazed and cowed by the simple blow , one he was all too familiar with , one he knew better than to struggle against . After that , he swallowed down as many of his intimidated , wordless appeals as possible , kept himself from trying to writhe or thrash or buck under her .

Question: What may have been her reason for slapping him ?
Answer: She wanted him stop talking nonsense .She was scared because he was a werewolf .None of the above choices .She wanted him to stop talking .