Joy Dishneau, 63, was found dead early Jan. 2 in her Highway 160 home between Gainesville and West Plains.
Authorities said it is unclear how Dishneau died, although the circumstances of her death are "suspicious."
The Missouri State Highway Patrol and troopers from its Division of Drug and Crime Control are assisting in the investigation.
Officers were called to the home around 10 a.m. Monday in response to a report of a suspicious death. They found Dishneau inside her home.
A press release from Troop G states that investigators determined that a silver 2004 Jeep Liberty with the Missouri license number YF7-F7F is missing from the premises.
From 2008 until recently, Dishneau owned Naturally Enchanted on Washington Avenue in West Plains. Dishneau moved the business to her home after numerous downtown West Plains businesses complained in September 2011 to the West Plains City Council of vandalism and lost business, which was blamed on Naturally Enchanted's clientele.
A reported 200 residents signed a petition that they presented to the city council, asking that Naturally Enchanted's business license be revoked.
The petition and accompanying resolution was presented to the council by West Plains Downtown Inc.
The petition stated, in part, that Naturally Enchanted created a public nuisance by customers loitering on the sidewalks and in doorways, vomiting and passing out on the sidewalks, yelling, using abusive language and begging. The group attributed a surge in crime to Naturally Enchanted's 2008 opening.
The city council took no action on the matter.
According to the business' Facebook page, "Naturally Enchanted is a nature and spiritual shop. We offer a completely new line of Herbal Incense that is not even being discussed in the state or federal legislatures. This is cutting edge, third generation!"
Seven photos posted on the site show employees and customers in the shop, which sells spiritual books, stones, gems, clothing, jewelry, fairy statues, candles, music, traditional incense and legal Herbal Incense, sometimes referred to as an alternative to marijuana.
The store's Web site, www.naturallyenchanted.com, states, "Our store is visited by a positive and vibrant collection of local friends and family of Caulfield, Mo. As soon as you walk in the door you will be greeted by positive energy and aromatic smells from incense and natural botanical oils. It is our goal to supply you with products to enhance and compliment your life."
According to online court reports, Dishneau failed to appear in Shannon County court Dec. 14, 2011, on a Howell County change of venue case for a "red light violation" from June 2011 in West Plains.
Dishneau appeared in Howell County Circuit Court in September 2011 and pleaded "not guilty" to the charge before Associate Circuit Judge Truman Wiles. In October 2011, Dishneau sought a change of venue.
Her case was set to be heard Jan. 3 in Shannon County.
Anyone having any information concerning Dishneau's death, or the whereabouts of the 2004 Jeep Liberty, is asked to call the Howell County Sheriff's Department at 417-256-2544 or the Missouri State Highway Patrol Troop G Headquarters at 417-469-3121.
The cause of Dishneau's death is still undetermined, and the investigation continues.