Natalie Rupnow, the 15-year-old girl who shot and killed a teacher and a fellow student at a private school in the US state of Wisconsin on Monday, may have written a manifesto. The teenage girl “was struggling with problems and had written some of them down,” a police source told news channel ‘CNN’. Natalie’s father Jeff Rupnow shared a photo of his daughter at a shooting range in August. “We have joined a shooting club and are loving it,” he wrote.

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