This stuff makes my blood boil...

Move back into your house - now. There's no need for you to pay for two places to live. Be there for your kids.

Move back into the master bedroom. Yes, she'll resist, but too bad. She's the one that wants the divorce, she can sleep somewhere else or move out. Take control of the finances. She's dependent on you. Take a stand. She's playing a game and you're playing it with her. Stop it. You can stand up to the nonsense she's handing you. You will survive and you'll be fine. When you really decide to get in the driver's seat things will get better. If you don't take the bull by the horns you'll just meander along and slide into a deep depression.

Tap into your inner tough guy and make things happen. Suffering has a good side; it allows you to grow. Take this opportunity to grow.