The widow of a New York City fire marshal faces prison for shooting him to death while he slept.

Forty-year-old Janet Redmond-Mercereau (mer-ser-OH') could face 25 years to life in prison when she is sentenced Thursday afternoon.

A Staten Island jury convicted her of second-degree murder on May 21.

Thirty-eight-year-old Douglas Mercereau was found in their home on Dec. 2, 2007. He had been shot three times in the head.

Redmond-Mercereau told investigators she never heard the gunshots. She said she was wearing earplugs and sleeping in another room with one of their children, who was sick.