You need to carefully read your final marital settlement agreement and judgment to see if there was any provision in it stating that certain issues such as your military benefits can be opened up for further hearing. If not, then the agreement is the agreement and there is no contractual or legal basis for your former spouse to seek benefits that she is not entitled to.You may wish to consult further with a family law attorney to assist you on this issue if your "ex" files a petition with the court for such benefits.