B2BD, I cannot offer advice. My W is pretty much exactly the same.
She will have moments of contact, but is otherwise n/c all the way. She also has had similar, public (friend) outbursts about how I'm such a bad husband. And I used to get caught up in it... I'm better, now... but I do still get sucked into it from time to time.
So here's the deal. There's nothing that I can offer for advice other than, keep doing for you. Understand that right now is what could be the rest of your life. It is about you and the kids, right now, and forever.
One day maybe it will be all about family, your W included. It is not, right now. So right now, your focus and energy should pull significantly further away from your W. For your sake and for the sake of the kids.