There is at least little amount of crush for the teacher on the student. He is the main suspect, while the whole world is led to believe he is not the one. The movie doesn't twist or turn for first 45 minutes or so. Her father is a freak, and led to believe he is the suspect for scamming car marketing clearance sale. In the end, the girl will be simply left in her home with hands tied. The girl says, at least I know my father loves me and she gives a look to the teacher. The look tells that she knows he has kidnapped her and he released her. The following might be the reasons, he kidnappned her:
1. This could be for the reason, everyone thinks he has crush on the girll. He wants to clear up his name that he is not.
2. He wanted to do kidnap her and do something, but he walks away in the end, by changing his mind.
Any other thoughts?