How can I motivate vindictive ex-wife?

I am writing this on behalf of my friend who has been seperated from his wife of 32 years for 2 1/2 years now. She has done everything she can to drag out the procedure of divorce. She is being spiteful and vindictive. I cannot understand this behavior because SHE was the one who was unfaithful all during the marriage. The kids are grown and gone and trying to remain netural, but they are beginning to see what she is doing to their father and are beginning to draw away from her. He has made her a very nice offer for a settlement and it is not good enough, she wants more. If she has her way, he will be living in a cardboard box under a bridge and giving her his entire paycheck every week, while she does not "technicaly" live with her boyfriend. This woman is clearly out of touch with reality, so how can one get through to her? He only wants a fair deal and to settle this thing, she wants to drag it out for years and make him support her forever. The lawyers are not interrested in a speedy settlement, they want the income, and you cannot get her to see that. You cannot talk any sence to her whatsoever, she wants to keep rehashing the same old stuff, over and over again. How can he put an end to this torture?

People very often get hateful and vindictive in relation to divorce. The legal system is meant to reduce such problems, but sometimes has the opposite effect. Seeing a family therapist might help you.