The Fond du Lac County Sheriff says a runaway teenager from Cambpellsport is believed to be in the Milwaukee area. Sheriff Ryan Waldschmidt says 17 year old Cassidy Schilcher is a foster child who ran away from home the day after Christmas. Waldschmidt says Schilcher became upset when she was going to be placed in a temporary foster home while her foster family went on a trip without her. Waldschmidt someone reported seeing Shilcher this week in the Milwaukee suburb of Greenfield.