Julia Roberts May Have to Battle for Half-Sister's Estate As Nancy Motes' fiance's brother makes more disturbing claims By Evann Gastaldo, Newser Staff Posted Feb 13, 2014 10:38 AM CST 28 comments Comments Julia Roberts participates in the press conference for "August: Osage County" on day 6 of the 2013 Toronto International Film Festival at the TIFF Bell Lightbox on Tuesday, Sept. 10, 2013 in Toronto. (Photo by Evan Agostini/Invision/AP) (Newser) – The latest drama surrounding the death of Julia Roberts' half-sister, Nancy Motes: A source tells the New York Post that Roberts may end up in a battle with Motes' fiance, John Dilbeck, who plans to argue that he should be a beneficiary of Motes' estate due to the length of their relationship. Of particular concern: gifts Roberts gave her sister and "intimate family pictures," the source explains. "There is a fear that John could be holding Nancy’s personal items hostage and possibly sell them to the highest bidder. If Nancy had photos and wrote a diary, describing her feelings towards her sister, he could use them," the source adds. And things get more bizarre: In an interview with the Daily Mail, Dilbeck's brother Conner—who has been ranting about Roberts on Facebook—claims Motes killed herself at this time specifically to hurt Roberts' chances of winning an Oscar for her role in August: Osage County. "We are talking about people who are powerful," he says. "People who have very delicate power, people who are in the limelight. Their power can be destroyed very easily if unfortunate things make them look more wicked. They have to be careful, it can destroy their career or their Academy Award." He also claims Motes' suicide note contains secrets about Roberts that Motes wanted to make public, and that Roberts is "terrified" the note could come out. Meanwhile, Radar has stories from both sides: Some sources insist Roberts had been trying to help Motes by getting her into rehab, but Motes' fiance says she was not a drug addict.