fellow teacher, jesika moxley, was in awe of the amount of energy ms. jones poured into her classroom. heather loved being a kindergarten teacher. from the moment that they stepped foot into the door to the moment that they left, they were dancing, they were singing, they were playing. andrea canning (voiceover): by april 2013, it was all coming together for heather jones. on a saturday night, she hit that rumba room dance floor to try out some moves she'd picked up at the gym and to show the world what she'd become. it was just so much fun. we were there for probably about a good three hours of just dancing. andrea canning (voiceover): three days later on tuesday morning, teacher jesika moxley headed to school, expecting to see her energetic co-worker, heather, already there. our school day didn't start till 8:00 or 8:30 that year, and she was here every morning by 6:30, 6:45. andrea canning (voiceover): heather usually couldn't wait for the school day to begin, so jesika was surprised by what she didn't see that morning. i pulled into the parking lot,