My comment above was because I was concerned you would be influenced by PM's post. Thanks for answering honestly.
I think you're angry because you sound angry, I'm not saying you shouldn't be angry. I think I addressed all that in a previous post. Anger in and of itself is not a bad thing, it's sometimes helpful but to not acknowledge it and continue to act from that place is troublesome.
Be as involved as you can be in your kids' lives, it just may not be with xW's assistance right now. That's OK. Let this thing about the classes go. Ask your kids about the classes. There are going to be lots of things that happen when they are with your XW that you will know nothing about, just like things will happen when they're with you that she knows nothing about. That's a given and it's OK unless either of you are endangering the Ds.
About the Daddy thing, who knows where it started. I know that must be painful, I would have been heartbroken. Tell her your objections calmly and see what happens. Don't make it something where they will be "in trouble" if they call him daddy. No matter what they call you, if you act like a daddy, you will always be their daddy. Heck, have them call you your given name! Words only have the power we give them.
Actions are so much more important than words.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss