I have been following your posts since June and nothing has improved. I hope you have documented the inconsistent behavior of your wife and a picture of her sleeping in the van might not hurt to show how irrantioanal she has become.
Do you have any grounds to have her committed to in-patient psych unit?
If not then IMHO it is time for one of you to get out of Dodge. What is happening in your home, I would guess, is causing emotional damage to the children. You posted she has not hurt them but perhaps what is happening between the two of you is hurting them much more than you know.
I have made this move myself, put my kids and my happiness up front and left with very little but we made it. I worked in a factory and paid for myself and 3 children and I was only 24 years old. So it is time to think of the kids and do what is best for them. Continuing this battle of wills is not conducive to a happy childhood for the children.
I wish you peace and hopefully this will be resolved soon.