“Bren Simon says her late husband and billionaire shopping-mall magnate Melvin Simon changed his will in part to prevent his three children from having a say over their stepmother's personal finances after he died.  The allegation of distrust within one of Indiana's most well-known and moneyed families comes in a 24-page court document Bren Simon filed Wednesday, vehemently denying a stepdaughter's complaint that she coerced her gravely ill husband to change his will to reduce the amount of money his children would inherit.”