I found this:
However, in the April 30 judgment (published only on June 16, 2008), Manhattan Surrogate Court Judge Reena Roth further
ruled Helmsley was mentally unfit when she executed her will. Hence, the Court, amid settlement, awarded $ 4 million to the charity, and $ 6 million to Craig and Meegan Panzirer, who were disinherited by the will (if they would keep silent about their complaint with their grandmother and deliver to her any documents).
The same article states that the two grandchildren, Meegan and Craig, were left out fo the will because they failed to name any of their children after her late husband.
http://en.wikipedia.org/wiki/Leona_Helmsley