Oscar winner Jon Voight says he has been trying to reach his

beautiful daughter, who hasn't spoken to him since he accused her of having

Angelina Jolie is at her mother, Marcheline Bertrand's, side while she is hospitalized after undergoing an operation for cancer at a Los Angeles hospital.

"Angelina is worried sick about her mom," says a close friend. "Everything else in Angie's life is perfect. But her mom's cancer hangs like a dark cloud over everything."

Jon Voight and legendary soul star Diana Ross are at the center of a romance riddle - after Voight claimed he is single and Ross confirmed the couple are dating.

Angelina Jolie's father, actor Voight, recently revealed he is single after he and the wild-haired singer appeared at a theatre bash last month hand in hand.