Thumper, I feel your pain and know what you're going through. Right now you should grieve a little, take care of yourself, and stay connected with the kids, family, and friends.
The W's mention of divorce doesn't mean it's all over between you. Whether she actually files, and go forward is another story.
If your business is 85% due to W's family, then I think you need to talk to them. Why would your W ruin her husband of 21 years and the father of her children? At the very least, develop a plan to reduce their percentage of your income over the next year or two?
To maintain a relationship with your kids, you should stay in the area.
Also, continue following the DB-ing tasks since it will help you detach and get on with your life no matter what happens.
