Christy Liberty Anderson, 32 of Upland plead guilty to killing her husband Craig Anderson. Anderson told police that she and her husband had had a fight over sex and when wash sleeping, she stabbed her him in the chest.

Craig Anderson woke up after he was stabbed but was then hit in the head with a flashlight before his wife slit his throat.

Initially, Anderson was charged with murder, however that charge was reduced to voluntary manslaughter after prosecutors said there was evidence that Christy Anderson suffered from battered womans syndrome.

Battered womans syndrome is used in domestic violence or spousal abuse cases where women who suffer from repeated physical abuse, verbal abuse or sexual abuse by their husbands strike out and try and harm them, sometimes even killing them.

Under the terms of the plea, Anderson will serve 21 years in state prison instead of the life sentence she would have received had she been convicted of murder.