Be careful of the anger, sleeper. It can make you miss things.
She wants the control. I think you're right about that. She doesn't like that you're happy and moved on.
Her not wanting your kids to be with your fiance's kids?? WTF is that? What was the thought about what divorce means exactly? That's life...suck it up.
When I hear her want to talk it out, I hear she wants you to agree to her view. I don't know her, but take it for what it's worth.
Your lawyer might have something to say to the counselor as well, although they may not talk about specifics due to patient confidentiality. She should be sharing the same information with you that she does with ex. If not, then lawyer should have a field day with that. That's low hanging fruit for a lawyer.
You should not respond to your ex if you ask me. Let your yes be yes, and your no be no. The less said by you and the more by her, the better for you and your kids.
She wants a fight. Don't give it to her on her terms, amigo.
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."