Something about shooting your girlfriend because you thought it was an intruder sounds very suspect to me. I can pick my girlfriend out from a crowd at a glance from 100 meters away, and can tell if it is her putting her key in the door and coming in or my brother, just by the speed and tempo of the sounds.
I don’t know anything about the details of this story, and I know that this does not automatically make him guilty of murder or something, but it does not smell right to me.
If you hear a noise, go downstairs, and can only make out a rough shape, you should still be able to tell who it is. Reading a bit on the story, it says he shot her as she was trying to wake him up for valentines day as a surprise. This to me suggests it was morning, or that at least he got a good look at her.
There are probably seasoned trained soldiers, who do not have the skill to wake up and start instantly shooting, there had to have been at least half a second between the brain waking up and reaching for a gun, in that kind of time a brain would usually register what is going on, and stop you from shooting the wrong person.
Who knows, I am not attempting to put him or trial or something, but it sounds very strange to me. Are they horror movie fans, and she woke him up with a hokey mask on and a chain saw buzzing? I can’t imagine a ’‘valentines day wake up’’ being mistaken for an attack.