What happens when you don't believe?

          Today I was reading a book by a long-time favorite author and came upon a scene I didn’t believe. The hero hears something about the heroine’s father. The heroine insists he tell her what was said, even though she knows the comment came from an unfriendly and not necessarily truthful source. Finally, unhappily, he tells her what was said.
          Guess who she gets mad at.          ...