Yea that's a tough song Turbine. Mine is "Colder Weather" by Zac Brown.
Just keep a record of what she said she'd do and whether or not it happened. Now she has an explanation about why she couldn't uphold the agreement. That's annoying, but it's not like she hasn't done this before, and with bigger things. And I agree that it was probably not in your interests to drag it all out either.
I would consider no longer contributing to the joint account if I was in your shoes. She is definitely taking advantage of the situation there. You can do this without being mean. I know that fear you have, that this is going to be the thing that pushes her away. But then, hopefully, you can remember that she is already gone, right? How can you lose what you don't even have? Once you give your emotions a reality check like that, it makes it a little easier to do the right thing here. Your kids may say you can do better, and maybe that's so, but right now you need to do the best that you can in regards to yourself and being the person you want to be. Doing better? That implies getting a "better" partner. Well you aren't ready for that, but in time I have no doubts that you will be.
H 34 W 29 BD 3/12/18 Divorce Busted Spring 19
It is not things that bother us, but the stories we tell ourselves about things.