Well it would be a positive step if she would unfriend him. But it would be even more positive if she did it without any pressure from you.
I well remember the day I blocked my OM. I sat there bawling like a fool, but I was determined I was going to get through the withdrawal and folks on the board had told me I needed to end all sources of contact. Right now, I can't remember what email name I used or the password.......nothing. But I'm not trying very hard b/c it actually makes me a little sick to recall those memories of when I was a crazy lunatic.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!