The fault is from the girl because people supposed to listen to what the flight attendant is saying. If the girl did not switch off her phone and something bad happened, it will not be good. The flight attendant is doing her own job and they told the girl to switch off her phone but she did not. That supposed not to lead to a fight if the girl listened. Please everybody should listen to what flight attendants are saying. If they said people should switch off their phone, they should do as instructed.