fwiw, this is my husband's latest:
oh, I didn't know he actually sent emails to her, I only thought he faked up emails from her to him
the original emails he sent her would be a sackable offense in most civilized places of employment
I think she should
(1) tell her attorney about it
(2) print them all out, and have a meeting with HR, showing them and telling them the story
(3) ditto with her boss
(4) ditto with his boss
(5) write a letter to him demanding he stop doing it, CC-ing her boss, his boss, and HR
items 2-5 subject to change depending on advice of her attorney
items 3-5 subject to change depending on advice of HR
Me here again: Not only are the emails fraud and an abuse of power, they are also sexual harrassment. Keep this in mind when talking to people.
Good luck, sweetie, I'm thinking of you today!