I've actually been kind of a broker in keeping them connected. The 4 of us were still doing things together, usually at my suggestion, despite my not wanted to see her, so that they would. I tried hard to keep them connected and keep their relationships from falling apart. My thanks is that she more or less robbed me in the divorce, taking as much as she could. She's on her own with the kids now, I never want to see her again. They do still spend some time together. Both the kids understand that she is their only mom and always will be.
NTA
They're not children, they can handle it.
That said? Maybe talk to them about not giving her the cold shoulder? She shouldn't have kept secrets and lied about shit, but from experience I can say they'll regret cutting her out. You never know how long you have with people until they're gone.
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