“From my understanding, she had thought about it for a few days because there was a dispute regarding her son wanting to put her in an assisted living home,” Maricopa County Sgt. Bryant Vanejas told CNN affiliate KPHO.

Blessing then pointed the gun at her son’s girlfriend, who struggled with her until she lost her grip of the gun. When Blessing pulled out the second pistol from her robe, her son’s girlfriend also knocked it out of her hand, the statement said.

Once she was disarmed, Blessing sat on a reclining chair until deputies arrived and arrested her, officials said.

“As the suspect was being escorted from the residence, she made a spontaneous statement to the effect of ‘You took my life, so I’m taking yours,'” court documents said.