Ok... first off, if the woman fully knows he is blaming her for his own problems then why stay married?
Sounds as if this woman wants to stay married because she thinks he will change..... not likely.
Unless he has PTSD, then she should seek a professional for counseling.
Other than that... in the U.S. you are NOT obligated to be married to anybody. Everyone has the right to divorce if they want to. Its out of her control if he wants a divorce.