telling me my W's lifestyle is about to change, etc.
Know what, CVA? Not your job to protect her any longer. Of course her lifestyle is going to change -- and, for her, it's going to change for the worse. I think it's great that you're not out to screw your W over financially. However, as everyone was telling GD a few months ago, this is a business decision. She's chosen to break up your partnership without much input from you, beyond what's good for your kids, you are under no obligation to help her beyond legal obligations.
Someone mentioned above that she has no conception of what life with 4 kids and no CVA to take care of them, her, the house, etc. will be like. From what you've posted, that's true. As most everyone's been saying, back off, let her start acting like someone who's separated and making her own decisions about HER house, HER budget, etc. Please, get a larger apt or something so that you can take the kids with you for a weekend or weekdays as your schedule allows. That'll give you no reason to hang out at your/her house.
Hang in there and keep the faith. This doesn't mean it's the end.
BD
My latest
Me: 36 W: 35 2 D: 9 and 5 T: 16 years M: 12 10/4/06: Bomb 10/5/06: Ended A 4/22/07: ILYBNILWY