A Springfield woman accused of killing her husband and son and trying to kill her daughter with antifreeze will not go on trial until May.

Diane Staudte was scheduled to go on trial for two counts of first-degree murder, first-degree assault and armed criminal action beginning Nov. 12.

At a hearing Thursday, attorneys agreed to delay the trial to allow more time for preparations. KYTV reports the trial is now scheduled to begin May 11. Prosecutors plan to seek the death penalty if Staudte is convicted.

Another daughter, 25-year-old Rachel, pleaded guilty last May to two counts of second-degree murder, first-degree assault and armed criminal action. She said she helped poison her family members at her mother's insistence. Her plea agreement requires her to testify at her mother's trial.