A New Jersey judge says the fiancee of a stock trader killed in the World Trade Center attack can pursue a claim that the victim’s parents defrauded her out of a share of $2.9 million from the September 11 Victim Compensation Fund of 2001.

It’s a rare example of litigation over what the fund intended when it made the award, part of the government’s $7 billion in largesse to the 5,500 victims and their survivors.