Roof to the blood

The victim is a high schooler named Paul Stone, who found dead in school roof. His throat was slain with an iron ruler. The killer is a high schooler named Rahma Jackson, who accidentaly killed Paul because she lost her temper. Rahma is dont want to kill Paul, but since the iron ruler was sharp, it can slain Paul's throat. Rahma is angry because Paul is always bothering her boyfriend, Renaldi Hunt. Because of her crime, Rahma Jackson sentenced to 2 years in jail.

By the way, this case is in progess