Police investigate after a 15-year-old girl was fatally struck by a Canadian National freight train along Metra’s NCS line off of Park Street between Chicago Avenue and Morris Avenue in Mundelein Saturday afternoon. | Photo: Nick Rusin The coroner has released the identity of a 15-year-old girl, who was a Mundelein High School student, who died after being struck by a train in Mundelein as the school offers support to her fellow classmates. An a…