I think only 3 theories really make sense here given what we know. 1) That Jayme was targeted to be abducted most probably by someone the family knew or had come across before (knew the father was coming home at midnight etc). Sadly if this is the case she is more than likely already dead, as over 70% of child abductees are killed within the first few hours or so. 2) That Jayme <modsnip - not victim friendly> had a boyfriend that carried this out, though seeing as everyone is saying she was very quiet, i'm not so sure about this. 3) This was a family/close acquaintance dispute and whomever killed the parents decided to let Jayme live and has her with them still alive somewhere. Ether way I hope she is found alive and was not responsible for this, although I am a bit of a pessimist in regards to that being the case sadly.