Imo they shot hella late. I was like yo he's running at her. SHOOT! But it sounded like the gun was malfunctioning for like 5-6 seconds and they had to cock that shit or they were trying to get a different angle to make sure they don't accidentally shoot her too. Description says her ballistic vest managed to protect her. Thank god. Also did you see that blood squirt? Shieetttt. He got lit the fuck up.
Edit: Also prob due to budget reasons, but the police need like live tracking on their officers. They were spendin a good amount of time trying to figure out just what street they're on. If she was actually badly wounded, getting location info in a timely manner would be crucial.