HOUSTON (AP) — A psychiatrist who wrote that Andrea Yates had no symptoms of psychosis two days before she drowned her five children in a bathtub came under fire from a defense lawyer who suggested the notes could have been added later.

The tense exchange occurred at the start of the third week in Yates' murder trial. She has pleaded innocent by reason of insanity to capital murder charges in the June 20 drownings and faces life in prison or the death penalty if convicted.

Defense attorneys are trying to show Yates, 37, didn't know right from wrong at the time of the killings because she was in a psychotic state.

Though Dr. Mohammad Saeed had previously diagnosed Yates as suffering from postpartum depression with possible psychotic features, he denied that he had evidence to show Yates was psychotic two days before the drownings.

Defense attorney George Parnham asked Saeed Monday if all his notes were made at the time of the June 18 visit.

"Absolutely," Saeed responded.

Yates' husband, Russell, contends his wife didn't receive adequate medical care during two extended stays at the Devereux Texas Treatment Network, where Saeed was a unit medical director.

Saeed has been removed as an administrator at the center, though he still treats patients there.

Saeed denied that the cursive writing claiming Yates didn't show psychotic symptoms appeared smaller than other handwriting s returned on May 4 after she filled the family's bathtub with water. She was released 10 days later.

"We hospitalized her because I thought filling the bathtub was an indication she might be suicidal," Saeed said.

Ellen Allbritton, who admitted Yates to Devereux on March 31, testified earlier Monday that Yates "had obviously been ill for quite some time."

"When I walked in the room and saw her, I pretty much knew this was someone who needed to be in the hospital," Allbritton said. "She looked mentally ill."

Allbritton said she was frustrated because the medical history provided by Yates' husband didn't match up with the unkempt, nearly catatonic woman before her.

In her medical notes, Allbritton wrote that Yates, whose father had died three weeks earlier, "needs in-patient stabilization for safety of self and others."

Yates' mother briefly took the stand Tuesday, tearfully telling jurors her daughter was a "wonderful mother."

"She was always watching them, protecting them," Jutta Karin Kennedy said. She dabbed her face with a tissue and cried during the less than 10 minutes she spent responding to defense attorney George Parnham's questions. Prosecutors had no questions for Kennedy.

"I'm sorry I put you through this," Parnham told Kennedy.

As she left the stand, Kennedy looked toward her daughter, who faces life in prison or the death penalty if convicted.