Laws vary from state to state.
Are you asking if she could claim assets if he died? If so, you may want to repost under Probate, Wills and Estates. In any state, the response will depend upon whether he has a will or dies intestate.
In Texas, once the divorce is final (30 days after entry), then she has lost claim to any property (unless she can establish a Bill of Review, which generally requires showing fraud).