As far as she was concerned my trouble was over,--except in so far that her unhappiness has been a great trouble to me,--when, on a sudden, I found that the story had reached you in such a form as to make you determined to quarrel with me!
Of course you do not know it all, for I cannot tell you all without telling her history. 
Of course you do not know all the story, for I cannot tell you all without telling her history. 