April's age is given as 27, but the DOB on her license was 1954.
The Sheriff says to contact the South Dakota state police. Like most western and southern states, South Dakota has a highway patrol, not a state police agency. A long time law enforcement officer such as the Sheriff would know this, as it would be similar to calling his sheriff's department a county police department.
The Ferg says that October was last seen at a Greyhound station in Madison, Wisconsin. There is no Greyhound station in Madison.