J.C.
I personally would not let my child ride to school with anyone if I was the least bit concerned about safety. Not even for a short ride to school. I would be very concerned about the installation of the car seat. Additionally, I really can not understand why you would tighten the seat when she wasn't looking. IMO people's feelings come in a far second behind a child's safety. Why would you not simply show her the car seat wasn't installed properly? I would think she would be grateful not annoyed.