My partner and I have been together for 14 years and he has been separated from his wife for 15 years. He hasn't spoken to her for the last 6 years or so, and we have no idea where she lives. One of her friends contacted me via Facebook a few months ago to suggest it was about time my partner divorced his ex. I manage to find his ex on Facebook and sent her a message to say if she wanted a divorce she just had to ask and let us know her address so we could send the divorce papers. She wants a divorce but won't give her address for the papers to be sent via post. Can we send her the papers via messenger on Facebook?