Hi Mr Mom of 4
Welcome to bpdfamily, I'm sorry this welcome is late.
You've been through a such a lot, frozen out, extreme silent treatment, it's destroyed your relationship with your kids, is a tough place to be.
I'm glad you have reached out for support to work this through, to understand what's driving your wife's behaviour and most importantly how you can help yourself for positive change, it can get better. Did the twins come first, last, you have four children?
A qualified therapist (BPD/Narcissist experience) can help you understand the dynamics and behaviours, they'll go short of a diagnosis as they have not met your wife in a professional setting, they'll point you in the direction from the info you provide and help you personally move forwards. Does that sound like a good way forwards to you?
the tools and lessons to the right work, they may feel counter intuitive, you can practice on your children, colleagues - they work with everyone, we often do re-do they take time to get right, where we feel confident is the place we want to be.
Do you have a family member or friend you can talk to?
We are here for you as you move forwards with members
WDx