I mean, can you really argue that they should have done all that without arguing that she shouldn’t have tried to drive away?
I'm arguing that one of those two entities is an (almost certainly) quite well outfitted police department who are supposed to be professionals and who are trained to operate in high pressure situations.
She was a random pregnant woman who could also have been any of those other things I previously listed (or more), and who panicked in a very human response to a threat. You can claim she only panicked because she had a warrant, but that's at least as speculative as anything I've said, and IMO more so. LOTS of people, especially of color, fear police, whether they have done anything wrong or not, and would especially do so in a circumstance such as this.
If they aren't training to allow for that possibility in a high pressure situation and behaving accordingly, there is a gigantic mismatch between what police are supposedly for and what they appear to actually be for.
Their mandate requires them to be authorized to use deadly force when they deem necessary, and basic ethics requires them to take all possible care to avoid application of that force against the wrong people, or without sufficient provocation.
They should cheerfully expect be criticized from every corner and required to aggressively look for modifications to their own processes whenever their actions result in a questionable death, or else they shouldn't accept the responsibility of being legally empowered to deploy deadly force.
Edit: And by the way. I don't accept this dismissal whatsoever:
It’s very easy to sit back in your chair with the luxury of hindsight and say how things could have been handled differently - they could have had more cars, they could have surrounded her better, whatever.
These are peoples' lives. I don't need qualification to be able to render a thoughtful and ethical opinion about the ease with which our police force ends, alters, or otherwise permanently changes them when they make these mistakes without accepting culpability for the outcomes. If it's within our legal framework for them to be able to do so, then our legal framework needs some work.