Matt, why is it you need to tell your D? Let your W tell her with you in the room. Your D didn't ask for this and you are both her parents.
You are angry. That's obvious. And understandable. But think beyond the here and now and think about how your D would look back on this. What she would wish her father had done differently when she found out about the divorce. Not what anyone else would do differently. What her father would have done.
It matters, Matt.
Your W is in la la land. She has her own issues. But you have to live with your choices and the things you say and do around your D. Trust me when I tell you, there will be a time later that you look back and will either be satisfied with what you said and did or will regret it. Your D will as well.
Separate the feelings for your W and the things she is doing from your actions. It's not easy, but you will be glad you did.
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."