The Benton County Sheriff's Office says Susan Fleck is facing a capital murder charge for the Sunday killing of Evan Fleck inside his home.
Benton County Sheriff Kelley Cradduck says Fleck died from a single gunshot wound.
Susan Fleck, 32, was being held in Delaware County, Oklahoma and will be transferred to Benton County.
Cradduck says four children aged 7 to 15 were at the home when the shooting took place.
The Gentry Police Department got the 9-1-1 call around four o'clock in the morning.
The shooting scene was at 19147 Highway 12, just inside the city limits of Gentry.