I would say that she should be charged.
She should be made to understand what she did.
The punishment should fit the understanding however and after the medical people have seen her and recommended a treatment.
It is obvious, that she cannot be running loose right now.
Any monetary fine would be useless and her parents would pay it, so I would order court supervised probation after involuntary hospitalization for a period of time.
I think that would be better than to just jail her for the offense. This is the correct way to handle mental illness and it does not let the person off or excuse the behaviour.