Adrienne Barbeau comes only to ET to talk to Mary Hart about the death of her TV mom, Beatrice Arthur.

For six seasons (1972-1978), Bea and Adrienne played one of TV's most popular mother and daughters on the controversial Norman Lear series, "Maude," but they were far more than co-stars.

"I loved her dearly and I think she loved me," Adrienne tells Mary.

Though she is grieving, Adrienne watched a clip of an interview ET did years back with Bea and through her sadness was still able to smile.

Adrienne knew that Bea was battling cancer, but she prayed that the Emmy Award-winning actress would win her fight.

"I actually had been out with my kids and I came home and there was a message on the machine from a news broadcasting service, asking me if I would come and talk to them about Bea," she recalls. "So that's how I found out. It was a shock."

According to Adrienne, Bea was a very private person, preferring to spend time with her family and her dogs. In fact, Adrienne hazards a guess that she would probably be bothered by all the attention her passing has incurred.

"She wasn't interested in the notoriety," Adrienne tells Mary. "She wasn't interested in celebrity. She was interested in making people laugh and doing good work."

There will be no memorial service for Bea, at her request, but her TV daughter leaves us with these words: "Nobody's going to forget Bea Arthur. Nobody will forget. She will go on forever."

For more of Mary's interview with Adrienne Barbeau, tune in to tonight's ET.