what a case this one is. the female was obviously the aggressor since she followed the cop, she was in an impaired state, and she initiated the physical contact.
that being said, a cop is taught to fire when someone is using or he believes will imminently use deadly physical force against them or someone else. simply stated, did he think he was gonna die? i will not 2nd guess. i was not there.
Wouldn't you also say that the cop should be firing AT something and not through tinted windows that he claims he couldn't see through?