Angela Horton testified Friday in Oklahoma County District Court that her mother didn't sound like herself, although she tried to act strong at first.
"She said, 'I'm scared and I've never felt so alone in my life,'" Horton said.
That statement was out of character for her mother, Horton testified in the first- degree murder trial of her stepfather, Dr. John Baxter Hamilton.
"She was very upset, very sad," Horton said. "You could tell she was crying. She didn't sound like my mom."
John Hamilton, 53, is on trial in the Valentine's Day slaying of his wife at their Quail Creek home.
Susan Hamilton's body was found on the bathroom floor. She had been strangled, and her face had been repeatedly smashed into the floor. Her skull had been beaten with a blunt instrument.
John Hamilton, a prominent Oklahoma City gynecologist, has been in jail without bail since Feb. 14. He says he did not kill his wife. If convicted, he could be sentenced to prison for life with or without the possibility of parole.
Horton told the jurors her mother had been upset because she suspected her husband was having an affair with a patient. Susan Hamilton, 55, had discovered on her husband's telephone bills some 60 cell phone calls to a stripper.
The victim told her daughter in their last telephone conversation that she and her husband were working on their problems.
John Hamilton and Alliena Aguirre, the topless dancer, deny they were having an affair. Aguirre said the defendant was her doctor and gave her free samples of anti-depressants she needed when she couldn't afford them. Aguirre testified the defendant was calling her 10 or more times a day.
Horton said John Hamilton was upset and denying he had an affair when he called her before the slaying.