Go look up the code on Vehicular Assault and Third-degree assault, and at least the people living in Washington state will know the applicable laws.
You might also want to stop slandering the people that think the police acted lawfully. That's a lot different from what they should have done, or could have done. But, if you don't like the law, change it.
This from the guy who thinks shooting at the car tires would have resulted in ricocheting bullets and street fragments hitting innocent bystanders.
By the way its not slander to point out that your thinking on this is wrong. The cops are not supposed to be meting out street justice over something of this lack of magnitude.
If the police had arrested this lady she would likely have ended up after a mental health evaluation paying a fine and losing her drivers license for 12 months. That would have been the end of it.