Police in the town of the town of Tonawanda told local media that 83-year-old Phyllis Eson was arrested Monday.
Officials said the woman had blood on her clothes when she answered the door. They said her husband was found dead on a floor. An autopsy determined he died from blows to his head.
Eson was being held at the Erie County Jail awaiting today's arraignment on a second-degree murder charge.