According to Coryne Hall's book on Mathilde which I'm reading for the first time, basically Alexandra wrote in Nicholas's diary in English that Nicholas told her the story of his affair with Mathilde and that Nicholas's confidence in the security of his relationship with Alexandra, despite telling her about his former mistress, touched Alexandra, she just uses the word '' confidence'' but basically she's saying confidence in their relationship, and Alexandra said too in this diary entry in Nicholas's diary that she hoped she proved herself worthy of Nicholas's confidence. Nicholas knew that he and Alexandra's relationship would withstand Mathilde's letters. But, Coryne Hall says also that Alexandra never looked well on Mathilde again, anyway Mathilde was a very different woman than Alexandra, so it's doubtful if Alexandra would have thought well of her. The source Hall gives for the Mathilde letters is a book called Romanovy by Bokhanov in Russian, never been translated to English. It's described on the Book Finder of the Alexander Palace Time Machine as ''a non political bio of the Romanovs not essential to non Russian speakers''. I would be interested in Bokhanov's source for the letters though, if anyone reads Russian and has the book, or has read it, maybe they can post. I don't read Russian.. I once tried to learn but got afraid of what my grade would be in the class and dropped it a few days in.