her buddy steven nickerson called her to be sure she was okay. >> i said, hey, have you made it to youret? she said, no, almost there. >> a few minutes later steven texted christina, but the messages were coming up green on his screen. >> reporter: which means her phone is not on? >> or out of service, yes. >> steven slept it off and drove home late saturday morning will. >> i shot her a text and said, let me know when you get home, whenever your phone charges or whatever it is. >> three days later onuesday afternoon,christina's mom johnnie, now living up in tulsa, oklahoma, got a text from one of christina's friends. >> asking me have i heard from christina and i said no, why. and she sent me back a message, she goes, her boss called me and said she never showed up for wo work. >> she hadn't shown for her shifts on saturday or tuesday. >> i got feeling in my stomach, i knew something was wrong. i sent christina a message on her phone and i sent hunter a message. >> hunter, christina's live-in boyfriend. >> and he never called me back. >> johnnie called christina's dad. >> i asked her f