First of all, I'm sorry for the trouble and crisis you are going through. From what it sounds like, this girl has had some sort of relations with this guy. Why would you try to make us all believe that she was forced to go with this guy? Maybe her dad forbid her to see him and see left because of that. As far as leaving without being seen, that is very easily done. With over 1500 students, the school can't keep an eye on everyone at all times. If she is with this guy, she probably went willingly. It would have been easy for her to walk out from the school and get in this guys car. If there was a struggle and she didn't want to go, then I'm sure someone would have seen something. You can't blame the school or resource officers for what happened