We’d been checking with the King County Prosecuting Attorney’s Office to see if they’d ever made a decision on whether charges would be filed in a widely reported case here in West Seattle – a 12-year-old girl accused of hitting a then-12-year-old boy with what some witnesses described as a backpack containing rocks at Southwest Community Center last June. (The incident was first reported here; the boy had to go to the hospital. We published details of the full police report the next day.) Today, the girl was charged with third-degree assault, according to paperwork just sent to us by KCPAO media liaison Dan Donohoe. The girl, who turns 13 till next month, is scheduled for arraignment two weeks from today in Juvenile Court. We are not identifying either her or the victim because of their ages; she is charged as a juvenile, not an adult (though some other media have identified them in the past, as they both gave TV interviews after the incident, so you may see their names elsewhere).