Robert Kennedy Jr insists he is not responsible for wife Mary's suicide He said: "The day before she died, she called me and said, 'You know me better than anyone in the world." She said, 'I was such a good girl. I said, 'I know you are and you still are. She really fought so hard. She had these demons, and she didn't deserve it. I know I did everything I could to help her. Mrs Kennedy's friends have suggested that she was distraught at the separation from her husband, who filed for divorce in 2010 and is now in a relationship with Cheryl Hines, the star of the television show Curb Your Enthusiasm, but had not completed the process. Mrs Kennedy, 52, had battled with alcohol and is also reported to have had a history of addiction to prescription drugs. But in his address, Mr Kennedy, 58, appeared to suggest another reason for his wife's unhappiness - her decision to leave the trendy neighbourhood of SoHo in downtown Manhattan for the suburban commuter town of Mount Kisco, and give up a promising career as an architect to care for the couple's four children. He said: "She was a SoHo girl. She blamed me from taking her away from her profession. She was the most extraordinary woman I ever met. I had feelings for her that I will never have for another human being. Her greatest quality was her courage. Mr Kennedy's six children all attended the service, and his son and daughter from his first marriage, Robert F Kennedy III, 28, and Kathleen, 23, were pall bearers along with their half brothers, Conor, 18, and Aiden, 11, and father. Daughter Kyra, 16, read a psalm. The couple's third son, William, 14, was also among the 300 mourners. Larry David, who stars alongside Miss Hines in Curb Your Enthusiasm and is a close friend of the family, had been due to deliver a speech at the funeral but was too distraught to speak. After the service, Mrs Kennedy's four children knelt beside her flower-covered coffin to pray and give a final goodbye as a bell tolled. Mourners were then driven by bus and car to the burial site four hours away at St Francis Xavier Cemetery, where Mr Kennedy purchased eight new plots last week. Her casket was placed in a new row a short distance away from other Kennedy graves. The Richardson family will hold a memorial service for Mrs Kennedy on Monday at a trendy hotel in the Meatpacking District of Manhattan. They had argued in court that they should have control of the funeral arrangements, given Mrs Kennedy's separation from her husband.