WALDORF-July 31, 2012-(KMKO)-One person was injured in a crash near Waldorf last night.  According to the state patrol, 17-year-old Amanda Holmgren of Mankato was southbound on Highway 83 when she used her blinker to signal a left hand turn.  The vehicle behind her, driven by 54-year-old William Hertling of Albert Lea, then tried to pass her.  The resulting collision injured a passenger in Hertling's car, 16-year-old Hannah Hertling.  Her injury was described as minor.  The crash happened just before 10:00 last night.