Hey VP, Welcome! I'm sorry to learn that your marriage is crumbling. I agree that the focus needs to be on you and what you can do to protect yourself and your kids, as you note:
I may simply need protect myself and my kids by taking action on my own.
Needless to say, you can't control or change your W and she seems unwilling to work towards a solution, which is something you may have to accept. See: the Serenity Prayer.
What is the best path for you at this point? What are your gut feelings?
LuckyJim