You just have to let the state dish it out. Being as how you have supported the children, they will just prove that your son was in your care. Such as school documents, receipts of any kind showing if you bought his clothe, food, etc. if you have any documents from doctors, I would gather all of that showing if you took him to the doctor at all. The best thing that you could do would be to get a paper from the school showing where your son resides. Get all of that documentation together and have it ready, just to have it on hand for when they need proof of where the child resided for the most of the year. Your mother, would have to prove that she had him for over 6 months of the year, provided food and shelter and or transportation to and from schooling if trying to claim him and if they give her money, she will have to pay it back if you prove that you had him.
