You are correct Eric_ Lowe when you say that the grand passion of Ducky's that was so evident in her marriage and courtship with Grand Duke Kyril, was what she wanted in her first marriage. And that more than some of the other reasons cited ( Ernest's infidility, and that it was an arranged marriage, they were different personalities, she was in love with Kyril, and that she wasn't happy in Hesse), is perhaps the true intellectual reason, if not the practical one that she got out of her first marriage. I coudn't have said it better. Ducky was not only the fighting Grand Duchess, but she was also very passionate.