TJP, I am very sorry to come here this morning and read what your h is now "telling" you to do about the money situation. I don't blame you for going for a legal separation and he's in for a rude awakening when he finds out what he needs to provide to you. I'm going to suggest an idea for you to mull over. You can always have the money garnished from his wages and deposited into your own account and that way you don't have to wait for him to provide you w/a check or him lord it over you to come begging for the money. It's easier and you'll get the check on time.
Your parents want to help you and they feel helpless right now do anything but provide you money. The mlcers don't care who that drag through the mlc bs just as long as they get what they want and when they want it. I'm so sorry your parents had to be there when this happened, but you had your support system there for you.
As for the girls, I can just imagine how angry and disappointed they are in their father. He's just lost the three best people that were in his life, i.e., you and the girls.
Again, I am sorry this happened. Please take care of yourself and ask plenty of questions when you see the lawyer. Do not share the information w/your mlcer until the papers are drawn up and ready for signature.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.