karlyn ramirez grew up there. she was an easy-going child says her mom. >> when she was young, she was calm and quiet. karlyn love to sing. she would sing all the time. >> [ singing ] >> when she was out with her friends, she would sing for them. >> this was one of her friends. what was it about karlyn that you wanted to be her friend? >> her smile. her voice. a big heart. she never saw any bad in anyone's. >> her friends say it wasn't all about singing. >> the local bar here, we would dance. >> they said the dancing could happen anywhere. that is karlyn in black. >> fun times at the walmart parking lot. >> only in a small city. she went to college and started in nursing then transferred to criminal justice. nothing that prepared her mom for what she did at 22, and list in the army. >> she didn't ask me. she told me after she had done it. >> your family is a military family? >> my dad was air force and my sister is retired air force. i was in the army reserves. >> the army sent karlyn to south korea, off-duty, she