WATCH: Woman Guilty of Murdering, Dismembering Son

A jury in Mount Clemens, Michigan finally reached the verdict that Donna Scrivo, a registered nurse, is guilty of first-degree murder and mutilation of a body–the body of 32-year-old Ramsay Scrivo, her son.

Donna Scrivo filed a missing person’s report in January 2014 and told authorities that her son had left home but didn’t return. A few days later, police found the young man’s body parts and an electric saw in bags not far from the Scrivo’s home in St. Clair County.

In her testimony, 61-year old Scrivo said that a masked armed man had killed her son and kept her hostage for five days. She said she’d found the strange man in her son’s room, and that after killing her son, the man made her help him and drive his remains to St. Clair County.

“I’m not mother of the year. I have multiple problems,” Scrivo said. “I think I did everything to protect the rest of my family. I did everything he told me to.”

The prosecution insisted that Scrivo had drugged her son, strangled him and dumped his body in the bathtub.

Mark Haddad, the defense lawyer for Donna Scrivo, had some convincing facts that were disregarded by the jury: How could a 110-pound woman lift a 235-pound man? Why would she murder and mutilate her own son?

“She would have to be the stupidest murderer in the world unless she was forced,” Haddad said. “Unless she was directed at gunpoint to do these seemingly stupid things.”

Donna Scrivo’s sentencing is set for June 23. She faces a possible life sentence without parole.