Mourners arrive at Mary Kennedy's funeral, with Robert F. Kennedy Jr. (center)
05/21/2012 at 11:00 AM EDT
A bitter feud has erupted in the wake of Mary Kennedy's suicide
last week, with her family and her estranged husband Robert F. Kennedy battling over funeral and memorial arrangements.
Mary's relatives did not invite Robert to a private memorial held Monday in New York City.
This follows acrimony over Mary's funeral
on Saturday, which only one of her siblings reportedly attended. Both sides had wanted to take custody of her body, but they let the couple's four children decide.
They chose to have her buried her on Cape Cod, near the Kennedy family's Hyannis Port compound.
Mary, 52, committed suicide last Wednesday by hanging herself at her home in Westchester County, N.Y.
While Mary's siblings hold their memorial Monday, Robert, 58, will reportedly take the children – Conor, 18, Kyra, 17, Finn, 15, and Aiden, 11 – to Florida, where they are expected to stay at their grandmother Ethel's oceanfront home in Palm Beach.
In an interview with The New York Times
, Robert spoke of Mary's depression. "A lot of times, I don't know how she made it through the day," he said. "She was in a lot of agony for a lot of her life."