Harrison County Coroner Gary Hargrove tells The Sun Herald the woman's name is not being released because of the nature of her death.
Hargrove said Monday the 57-year-old woman had a Louisiana driver's license, but it appeared she may have had a house in Ocean Springs.
Her estranged husband, a 66-year-old retired Army major, was wounded and required hospital treatment, but his injuries were not believed to be life-threatening.
A military spokesman said the man and his wife were going through a divorce, and he was staying at the campground when she apparently showed up and a domestic dispute ensued.
