This isn’t so clear cut, the police did try to ask questions first. They asked her to stop and speak to them, she kept walking and got in the car. They asked her to get out and speak to them, she refused. They broke the window (escalation) so she panicked and tried to drive away, smashed a police car behind and then drove forwards over the curb. At that point she’s using her car in a very dangerous manner, so lethal force is potentially justified.
However the police shouldn’t have escalated by breaking the window to begin with. They had her contained, she was no longer a risk, not until they escalated.