It is normal for a school to hand out an after school detention for mobile phone use (in this case, sending a message during lunch hour - a first offence)? In this case, it is the school's stated policy, but I would be interested to know whether this is usual.
I had assumed that some work would be set during the detention, or she would be allowed to do homework. However, she was required to sit doing absolutely nothing for an hour. Is this the norm?