H4H, No where in that strategy did I say to wallow in self pity after a series of attacks didn't win you the war right there!!! Go back and lick your wounds. Let her initate contact for the basic things and contact her only when necessary about the kids and Thanksgiving. Thanksgiving has to be your next "Plan A" Attack. The holidays are great reminders of family...something the enemy "FH" will never be. More and more this has too put pressure on them. Eventually he will want more than to be the guy in the shadows. Some truth darts from the kids would provide a nice dagger in that fantasy. I know some don't like to use kids but if your subtle and creative you can allow them to be "helpful" without directly using them!!!
With that said based on what you stated she said to Miguel about the phone call and the not being secretive comment...I have to agree that was a blow and a troubling one too. The question is did she already know it was "FH" or just a call? It sounded like she hadn't even identified the caller yet, just throwing that out there. Maybe a well timed nasty truth dart about "FH" might remind her that you are still not OK with this and haven't given up.