My scenario is she gets off shift, has a couple of pops at a local watering hole on the way home. Goes home a little (or a lot) tipsy tries to enter the wrong apartment (I’ve read that her key was in the door and she was yelling she was a cop). The guy looks sees she was a cop and opens the door. She figures it’s not her boyfriend etc and blasts away. Definitely manslaughter or even second degree murder.