C - This is where you really find out what your made of. So far you are showing that you are strong and can handle adversity. To be able to look past what she did and how she hurt you is not easy. But is necessary if you truly want to be with her again someday. The reason she is not showing any remorse or guilt is because she CANT possibly start to FEEL the GUILT or HURT that she has caused you and the boys. She needs to keep "DEMONIZING" you in order to JUSTIFY what she has done.
As hard as it is. Just continue to be nice and ACT like nothing she says or does is effecting you. If you do this then you will FORCE everything back on her. Eventually she will have to accept what is happening and what she has done. Whatever you do DONT "get in the mud" with her. When she starts blaming you for everything and trying to justify her actions just RESPECTFULLY SHUT her down.
Keep on doing what your doing. When you see her just keep on being nice, but dont let her TREAD on any of your BOUNDARIES. You will take CONTROL of your interactions and she will not know what to do. At first she will be pissed and try to get you to ENGAGE. DONT... just stay calm and tell her to talk to your lawyer. If she was ever going to apologize that would bring it out. If she is too far gone to ever FORGIVE you in her mind and can JUSTIFY ALL her ACTIONS. Then FOR NOW it is OVER.
I dont think she would even consider the Retro right now and wouldnt even suggest it. She knows how you felt all along. She might be thinking that you DONT EVER want anything to do with her again. But that is good. You dont want her to think she has any POWER over you right now. If she wants out make her work for it. Just protect yourself. Keep all records. It could get messy.