Goodness me you are in your own personal nightmare right now @Faith-and-Hope . I feel for you, I really do, especially because I know that it will be very dragged out.
"I feel done for a lifetime" .......I totally can relate to that.
Do not give that women a 2nd chance with D2. Her behaviour has demonstrated all that you need to know. If she isn't an empath, she's self-centred like he is. It is often either a NPD-Empath dynamic or 2 people on the same spectrum, because they both sympathise with each others behaviour, and that becomes the glue of their relationship. Love doesn't really matter, being together makes them feel less self-conscious of being an a-hole. It's not so much their particular partner that they want to live with, they want to live with someone that makes it easier living with themselves, and who they really are. A like individual on the same spectrum fulfills that. You are nothing like this and that is one of the reasons why you had to leave and end the relationship and the speed with which you did. There was no hesitation and no going back, which indicates to me a strong sense of self, and strong sense of right from wrong. Plenty of people love drama. They get off on it. I swear to god if you threw them inside an MRI machine the pleasure parts of their heads would light up, they can't live without it, and find people that don't love drama a total bore. My besties used to be friends with a toxic couple like this. Because they work shift work I don't often get to see them so was always stocked to catch up with them when they were awake during normal hours. I would absolutely dread going to see them if this couple was going to be there. It wasn't a case of he was violent to her and she was the victim, they were both as bad as each other! And they loved it, they got off on it. It was such an eye opener for me. I would be shaky and panicky & say to my friends, oh my god, oh my god he is a psycho, and they would tell me, oh no don't be fooled it is actually mutual. I didn't believe them at first until one NYE party and then I was like, OK, this isn't your usual DV situation they are both violent. They are no longer friends with them thank god. I guess what I am saying is it so easily could have swung the other way and this scenario has revealed a lot about you. Your kids will really admire you for that and consider you the powerhouse of the family once they get some distance on this. A child's loyalty to a parent never ceases to shock and even disturb me, but even that has its limits. You're a great Mum and they are so lucky to have one sane parent.
The "scrambled" feeling you refer to that empaths experience when knocking up against someone with abusive NPD, I refer to as the washing machine spin cycle......I can pick it 100,000,0000,0000,0000 miles away. I don't even have to have ever met them, their energy is distinct. You do have a lot going in your favour. Having had a secure childhood attachment would really put you in good standing of not being sucked into their vortex. I have a very anxious attachment style from the early life neglect and I get sucked in by my caring and affectionate nature.
I really hope that you have sound legal advice....its so awful when you don't know where to start. But yeah, I don't have any expectation the legals will be finalised this year, I am hopeful that it will next year sometime.
Keep your kittens and cubs close,
Corny 