Need help

I know that the person that I am writing this about will probably never read this. I have written about this friend before. If you remember she was dating a jerk. Well, she called off the engagement. I am so proud of her. I am so happy that she realizes that he is a jerk. Today he wrote an email. It was his response to her email (if you remember he is overseas). I didn't much understand why she was so upset. I mean, afterall she was the one to call it off. Then I read the email. I am sitting here alone crying myself. It was honestly the nastiest email ever. He was so mean. Using language I don't approve of, calling her a slut, telling her to return the ring to his family, stay out of his life, don't talk to him ever again, and most of all, telling her she is not worth anything and stuff like that. That he has always been faithful and he is overseas and she should be supporting him and stuff. Like he never looked at other girls and that she did this all at the wrong time. I feel so sad for her. I don't know how to console her. I just don't know what to do...