I sent her a facebook post and went to see OWH at work. It got me four voice mails, each one more desperate and more shrill than the last, trying to convince me that I'm insane and have low self esteem for staying with a monster, why don't I just leave him. And two facebook messages that said much of the same thing, that I needed counseling and to leave him since he's such a monster.
I didn't respond, knowing full well that she was hysterical over me contacting her, and if I replied to her, she would have thought she had the power. I'm sure in the beginning she tried to convince herself that she had power over me, and may to this day, but in reality, I know she obsesses over me and asks H about me and that suits me just fine.
If you can ignore OW's antics, and not be hurt by it, it can help stir the pot a bit... but know that they will believe you are crazy, try to make you seem that way, and will convince H that you're clingy, needy, unattractive, whatever. So, there's good and bad to consider.
