The school's hands have been tied by lawyers. Most don't even have detention as a deterrent anymore. They have no other alternative.
Keep in mind this cop doubled as a school officer so he probably was well aware of this problem student.
30 years ago we had police in the schools. Ours would befriend kids to try to find out where the narcotics were coming from. This is nothing new. But! A teacher who can not or will not control their students and calls the police in has lost the battle.
I think I would have handcuffed the little twit to her desk and left her there until her parents came to collect her. But I probably would be fired as well.