My son is in a federal prison camp. He's broke. His girlfriend has all his money and his kids and his possessions. Her attorney is filing divorce comp

Her attorney is filing for a divorce, even though they are not legally married in the United States,or anywhere else, she filed for Change of Domicile and for a Mandatory Settlement Conference. He has tried to answer these motions by sending his answerson to the court and to the judge and he is getting sticky nones back telling him he has to answer with certified MOTIONsubject. He needs an attorney to do that but he has no money and no means to hire one. His prison camp does not have access to a Friend of the court.