"...send the fucking morgue, Im shooting the asshole and going back inside..."
"...she opened the door with the .357 in plain sight..."
Here's where you're applying facts to both cases that aren't relevant in both cases.
In my case, the perp didn't know the police were on the way until I had him on the ground pissing himself and I had 911 on the phone.
Second, did I go outside looking for a fight? I went outside to see who in the hell was trying all the doors on my house at 1:30 in the morning while my newborn son and then wife were trying to sleep.
Look for a fight? Only to the extent necessary to stop an intruder from breaking into my house and making the situation much worse which would certainly have led to his death. Of that there's no doubt in my mind, even all these years later. That would've easily been considered a good shoot too.