Maybe getting your kids involved with cooking and trying out recipes would help. It would be a good way to have fun, relieve stress, educate them about food, pass the time, and more importantly, eat healthy. Now you won't have an excuse to eat poorly.
I know life is rough for you right now but it WILL get better. You just have to keep believing it. And it is possible to makes Life's Downs turn into Ups. Is there anything that going through all of this has taught you? Reminded you of? I can tell you right off the bat that it is affirming what a strong person you are to handle everything and handle it well. A little eating aside. No biggie.
I agree with patns. Put the scale away for now and focus on non-food ways of either passing the time or enjoying your children. The eating will fall into place after this. And don't be afraid to ask for help from any supportive people in your life! Perhaps you need more decompression time to yourself per day. I know I would.
It might not feel like it but you are doing great! Remember to love the person who you are NO MATTER WHAT. Feeling hopeless, fat, and worthless never helped anyone. Furthermore, it's a complete lie.