More details continue to surface about the death of Julia Roberts‘ half-sister Nancy Motes -- and Breaking Celebrity News has learned that some surviving family members believe the Oscar-wining actress' relentless taunting may have led to Motes’ untimely overdose death.

Conner Dilbeck, the brother of Motes’ fiancé, John Dilbeck, spoke to Inside Edition and said that Motes blamed her sisters – Julia and Lisa Roberts Gillan – in the suicide notes she left behind.

“In the letter, it said, ‘My sisters drove me to do this,’ and she had no