Well, we don't know where she shot him, that's true. She could have shot him in the shower after she cut his throat and dragged him there, then rinsed the shower stall. Here is the final summary from the ME's official autopsy:
", Based on the autopsy findings and investigative history, as available to me, it is my opinion that Travis Victor Alexander, a 30-year-old Caucasion male, died as a result of sharp force trauma of the neck and torso."
High velocity blood spatter from gunshot
http://hemospat.com/terminology/images/High_Velocity_Impact_Spatter.jpg
Where is it?
Oh, she shot him in the shower last? How did she get the trajectory of that head wound? In the shower he is lying down with his head towards the back of the shower.
IMO