It appeared to me that she shot him three times initially, and that when the car moved away she did shoot one more time.
No, there was only one shot. When the cover car moved, the cop appeared to tell the suspect to roll over on his stomach because as he was rolling towards the gun at the time. The suspect seemed to comply. If he would have been shot a second time, you would have seen the suspect react.
Not much recoil. 9MM or .380?
She clearly hit him in the chest once, maybe twice. Good look at reality as compared to what one have may imagined reality would be in a take down.