LSG, I am so sorry it has gotten to such a point. D is bad enough but to have someone make it that much harder....
I don't know how far your parents are, and no it will not be an ideal situation, but it may be what you need. Even in the short term it would allow you some time with out all the daily pressure of being around W and her actions. Hopefully your L will tell you some good news as to paths you can take legally to get the support you need for the kids.
As with you, I took off the ring, but put it back on. It is just not me to give up on the M, even if it looks like it is over, until the papers are final.
I will pray for you and your kids.
If you have to leave the boards know that people will still thing sbout you and you can always catch up with us.