her parents, don and suzy, living in caledonia, michigan. laura was the youngest of four children. she had an older sister, lisa and two brothers, kenny and mark. laura and her boyfriend aaron had been dating for three years. everybody knew they'd get married. what was she like as a child growing up? mom? >> happy. giggly, joyful, just loved being where everybody was. she was a lot of fun.v everybod. she was a lot of fun. liked everybody, everybody liked her because she was just real. and genuine. >> whitney cerak was 18. she grew up in gaylord, michigan, with her parents and her older sister carly. >> whitney was just an amazing girl. i know i'm partial because i'm her mom. she was a lot of fun to be with. she made people feel special. she made us feel special. >> whitney was a freshman, laura a senior at taylor university. a small evangelical christian school in indiana. >> this sounds maybe quaint, but a real family feeling that you connected with so many other people there. >> laura and whitney were both outgoing and athletic with a wide circle of friends. they didn't know each