this was about the only thing. >> reporter: after high school kianna jackson went to college.hree hours from home. a year later she moved to las vegas. far from home now. she got closer and closer to her mom. >> she will call me everyday and talk to me everyday and text message. >> a loving daughter. >> i did not think anything that was happening. >> reporter: no idea. even in october, 2013, when kianna jackson called to say, she was on the bus toward santa ana. >> did she tell you why? >> visiting friends is what she told me. >> reporter: but the girl who called her mother almost daily stopped calling. >> anything over a day or two i would say, this is not right, something is not right and i would text her and she would text back but this time, nothing. nothing. >> reporter: gone. nothing to her mom, her friends, to her boyfriend. kathy went to the police. >> when i went to file a missing persons report they said she is an adult and there is nothing we can do for you. >> you knew there was a problem. >> yet. >> reporter: kathy started doing her own digging. tractor daughter d