Listen, if she appears "happy with the sitch", it's because YOU have HELPED HER!!
OMG! if I left my H and he was at my back and call and there were no consequences, heck, I'd be happy too!! I deal with a lot of BS from my H--I'd love to have the "best of him" with nothing else!lol.
This is the week that you have a TON of fun, and W gets to grow UP.
Don't let anything stop you from helping her grow--expect sadness, anger, whining, tears--oh well. Every tear she sheds is because she MADE A MISTAKE and is REALIZING IT. Tears mean GROWTH.
Again--MINIMAL CONTACT. Your cell was out of range, or not charged or...whatever. I would even go for like 2 days if the kids can stand it....
This is the life SHE CHOSE. Now let her deal with it!!
NC and consequences that are painful--you must concentrate on this. She thinks she can pick and chose what parts of you she wants--DO NOT let her THINK this!!
YOU have let her have that idea WAY too long. Your kids need a mature woman for a mom, not a child. Think of THEM FIRST. She is now last on your priority list.
You're a fantastic dad--I'm very excited for you and your kids are SO BLESSED!!