Son back from Iraq needs help

What is the name of your state?
Pa.
My son who is in the 82nd Airborne just got back from Iraq. He is getting a divorce. His wife was was cheating on him while he was gone. She spent all his savings, didnt pay the bills, ruined his credit. She now wants 500.00 a month . They have no children and she wouldnt work to help out even tho he rented a nice big house for her to live in. She has moved back to her grandmother. they have been married about 2 years. He will be out of the army in about 3 months. He only has a high school education and will have no job when he gets out. There is no property or children involved. She has a nursing degree.She will get a nice paying job when she gets her nursing license. I told him he should sue her for pain and suffering. He had to get mental counsling while in Iraq. He found out about this about 2 weeks before he came home and had a very hard time dealing with it over there.He wants her to leave him alone and he wants to start over with out her. Maybe if she thinks he can sue her she will forget the money demands. What can he do to get her to stop the money harrassment.
Emma

Emma, the first question you need to answer is has anyone filed for divorce yet? Answer that then we'll proceed.

Pa.
My son has filed for a divorce. in Pa. 2 weeks ago. But she is trying to make the army make him pay the 500.00 a month in housing allowance to her,till he gets out in july. He cant not afford to pay her even if he wanted to because of her spending all his money he earned while being shot at and watching his buddies killed or lose their limbs over in Iraq. He just wants her to leave him alone. He supported her for 2 years. She was suppose to get her licence in nursing but wouldnt study for it. He helped pay on her nursing school debt even tho it was made before they were together. The only way she will stop her demands is if she thinks he can sue her somehow and cost her money. Also she will not want to have all her family and friend know what she did to him. She would not want her male friends on the witness stand or her old girlfriends from Fort Bragg to tell what they know.
Emma