A child was caught bringing a gun to my son's school yesterday. What do you think should be done about it?

It was an unloaded starter pistol that the school determined was inoperable. A 7th grade girl brought it to school to threaten someone. From what my son tells me, her brother is a known bully in 8th grade and it seems the sister is following in his footsteps.

I do not yet know if the girl was suspended, expelled, or what resulted from her actions. All I received was a note from the school with minimal details. They did not cancel school.

This is a very nice school in an affluent neighborhood. I would not have expected this to happen here. This area is as safe as any on the planet. The Junior High School is affiliated with a University just one mile away. This is not a bad part of town at all.

What do you think should be the punishment or fate of the girl and/or her parents?