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Serra Catholic High School is closed the rest of the week after a student was killed in a crash Wednesday. NewsRadio KDKA's Shelby Cassesse has more from a woman who jumped in to help in the moments after the collision. Jess McCauley and her husband were taking their son to school Wednesday morning. As they crossed the Mansfield Bridge, the saw the crash between a Serra Catholic School van and a car that had occurred moments prior. 15-year-old Samantha Kalkbrenner died at the scene. She was a sophomore at Serra Catholic - facebook posts painting her as an advanced dancer and cheerleader who always had a smile.