That is a judgment call whether it was a bad shoot or not. But you cannot use 20/20 hindsight. It looks and feels a lot different when you are the one on foot, in the street, standing alongside the thousands of pounds of moving metal.
Juries usually side with the cops because they take that into account. The cops have a split second to decide and they are going with 'worst case scenario' when they decide to shoot or not. And since it is reported that the cop was hit, they will likely be seen as justified. JMO
I am not sure the citizens will be on the hook in this one. Her recent record and her social media rants and admissions will work against her, imo.
I don't think her record or social media posts will play a part in what happened in the alley - any probe will be about what happened in the alley.