HOUSTON (AP) — Less than three weeks after Andrea Yates drowned her five children in a bathtub, she seemed puzzled by a prophecy she had previously said drove her to kill, a jail psychiatrist testified in Yates' capital murder trial.

Dr. Debra Osterman, who began treating Yates in early July, said at the Houston woman's murder trial Tuesday that she saw Yates' confusion as a sign the defendant was emerging from her psychosis.

Other psychiatrists have testified that Yates was delusional, believing that she could save her children from hell by killing them, and that she would eliminate Satan from the world when she was executed by the state of Texas.

"She recalled mentioning something about that, but wasn't sure how it fit in with anything," Osterman told jurors, referring to notes she made about Yates on July 12.

Yates, 37, has pleaded innocent by reason of insanity to capital murder charges in the June 20 drownings of 7-year-old Noah, 5-year-old John and 6-month-old Mary. Charges could be filed later in the deaths of Paul, 3, and Luke, 2.

Defense lawyers are trying to show Yates didn't know right from wrong at the time of the killings because she was psychotic.

Osterman said she first saw a glimmer of life in Yates' eyes on July 20, exactly a month after the drownings. By Aug. 3, the psychosis had lifted, she said.

"It took longer than has been typical of other psychotic patients I've treated," Osterman testified. "It was like coming out of a fog."

Defense attorneys planned to call their final witness, another psychiatrist, on Wednesday. Prosecutors will then begin calling rebuttal witnesses.

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.