"she's still determined to be free of me, i didn't sense any hesitancy."
Do you honestly feel that you have improved YOURSELF to the point that you are a better option?
Have you worked on changing the parts of you that need changing?
Or have you spent the last three months only really thinking about saving the marriage and doing things you THINK will save the marriage?
You are once again waiting for any little tidbit of information you can get from your kids in regards to your wife. You need to let that go and worry about you. Space will work for you in many ways; 1)It gives her what she wants 2) It gives you room to work on yourself. The faster you give up wanting those little nuggets of info...the better you will feel.
Business-So you are paying the agreed upon support amount and then paying more. Yet she still doesn't have enough to cover the bills or else is using it for other things. Time for a boundary...stop overpaying. If the kids need something above and beyond....then take them shopping yourself. If the kids need food, then go take them out for dinner. I understand protecting the welfare of the kids, but your money may not be being used towards that end. Remember that your wife is the one that chose this route.....the reality is that she will not have the same amount of money as is used to. That is something she has chosen to give up. I think it would be a good slap of reality to find out that you won't be helping her financially anymore beyond what was agreed upon.