What she was doing at that very moment, if she was resisting arrest or not, is irrelevant.
Instead, she could have been charged with disorderly conduct and resisting arrest, and the officer could have justified his actions.
But without an arrest, it is difficult for an officer to justify a use of force.
Why is it irrelevant? She either was disobeying a lawful order from a police officer (multiple times, not just once) or she wasn’t.
You look at this like it happens in a vacuum, a very shallow approach.
And you justify it with circular logic: “Well, she wasn’t arrested, so she didn’t do anything wrong.”
Intellectually very weak.