Life is not always fair and she is playing out the only script she knows. He on the other hand was like you once - besotted and in love.
Its a cycle and yet another is playing out. Its a shame that kiddos are involved however I am sure they are loved and cared for.
Are the kids seeking therapy?
The major difference between that SOB and me is that I didn't have an affair with her. She was already separated from her first husband and living with friends of mine, which is how I met her. He's also over the top NPD and very controlling. I'm neither.
The question on if the kids are seeking therapy or not is asked of me a lot. The answer is no. When their mother moved out, they never shed a tear. They've never missed her. She was never really involved in their lives and never bonded. I was the active parent and always did the things a parent does but did it alone. She never participated, not even so much as to take the dog for a walk down the street. My son never misses her. The times my daughter misses her is when she has a teenage girl kind of question and would like to bounce it off a mother figure but not exactly her own mother. She just wishes she had a mother but it passes. She's a very strong and independent girl. She may need to seek out therapy some day and I have offered it to her but she'll do it in her own time.