Jennifer Crumbley said she wishes her son had 'killed us instead' as she testified in a manslaughter trial.

Jennifer Crumbley, mother of Michigan school shooter Ethan Crumbley, testified in her manslaughter trial.

She revealed arguments with her son over missing school assignments and acknowledged the ability to take him home on the day of the attack.

Both Jennifer and her husband, James Crumbley, face four counts of involuntary manslaughter related to the shooting.

Ethan Crumbley, then 15, carried out the school shooting, resulting in his sentencing to life in prison without parole.

Jennifer became emotional during her testimony, admitting to feeling like a failure.

She clarified that she doesn't believe she's a complete failure as a parent but acknowledged shortcomings.

Jennifer expressed uncertainty about where she went wrong in parenting Ethan.

James Crumbley's trial is scheduled separately in March.

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