A psychiatrist testified that a mother accused of the death of her 3-year-old daughter was so depressed she couldn't stop herself.

Defense witness Dr. David Williamson was one of three psychiatrists who testified Monday. Two others testified for the prosecution in Queen Anne's County Circuit Court in Centreville, saying Victoria Sparrow planned the killing weeks in advance.

The three testified at a hearing to determine if Sparrow was legally insane when she poisoned her daughter. Police say Sparrow killed her daughter, Laci, in December and then tried to kill herself with pills.

Sparrow has pleaded not criminally responsible by reason of insanity. Circuit Judge Thomas G. Ross will decide whether she was insane.