A 36-year-old woman was stabbed to death last month in an unprovoked attack outside a Dollar General store in Florida, according to police. The Putnam County Sheriff's Office said Cheyenne Kastens was ambushed by Lemar Beasley, 54, in the parking lot in Fruitland Park, a town in Central Florida. Beasley stabbed her more than 40 times, according to the State Attorney's Office.