I dont know your sitch but I dont think I will be surprised when I read it. If you want to know how these As turn out, read about them. They dont stand great chances to survive. She is probably "high" right now,living in her little fantasy. When (if) you separate, she will get a clearer picture of what's happening. IMO, that is the crucial point and keep a close eye to "feel" what's happening.
Stay strong and focus on you and your little ones. Keep your PMA for now and do what's best for you, legally and emotionally. K