I hope you will give top priority to your health and the health of your children. Please do whatever will be best for your safety. Perhaps I am misreading you, but it seems that you are in some possible danger.
It can be costly, but having a consultation with an attorney might be the best way forward. I don't know what your financial resources are but sometimes there are free or low-cost legal clinics that can help. There are online attorney's too but they charge a fee.
So terribly sorry that I don't know how to help you. Please keep yourself and your kids safe. I would not want to see anything bad happen to you or them!!!