The seven-woman, five-man jury deliberated for two days before finding Jeanne Hofer Ma guilty of second-degree murder and assault on a child causing death.

The jury will return Friday for the trial's sanity phase and eventually will try to determine if Ma was legally sane at the time of the crime.

In her closing argument, Deputy District Attorney Ronda Brody told jurors Ma was worried her brother would kick her out of the house, so she "intentionally placed her palm over the nose and mouth of the baby" until the infant stopped breathing on Nov. 10, 2004.

"The newborn baby can't kick and struggle to get the hand off her face," the prosecutor said. " ... The only reason this baby died - this healthy, alive baby - was because she was asphyxiated."

Defense attorney Alan Eisner had asked the panel to consider the lesser charges of involuntary manslaughter and assault causing great bodily injury.

He noted that three mental health experts have concluded Ma, then a student at Grant High School in Valley Glen, "had a break from reality."

"They're clear about her mental impairment. ... She did not have the mental state that the (prosecution is) alleging," Eisner said. "This young person is not going to trick two psychiatrists and one psychologist."

Ma, who pleaded not guilty by reason of insanity, initially told her boyfriend and others that the baby was born dead, and concealed evidence that the infant had been born alive in a bathroom at the home where she was living with her older brother, Brody said.