You assume that, if she actually did kill him, she did it there. But, OTOH, if she instead went there as a cover story.... One can explain the blood on the life vest by the simple expedient of putting his body in the back of the truck.
I'm not ready to call her a liar, but there really are things that sound strange about her story ... e.g., she describes him flipping forward over the handlebars after being shot in the front of the head. And I seem to recall her saying that she had to turn him over to notice that he had been shot in the head, as if the bullet had not gone all the way through (as one might expect it to do). Those sorts of errors could be explained by stress ... but they do sound like errors.
Some kids broke into my business and in court I testified that they were not given permission to be there. I couldn’t remember the names of long time employees..not sure I could have told them my name since I was so scared. I did nothing wrong but sitting on that witness stand emotions were rapidly changing. The Lawyer made one mistake though he said something that peed me off..fear was gone and I became a model witness. My Husband (a policeman) smiled when he saw the change in my demeanor and knew the reason for it and the boys were convicted of breaking and entering.
“. e.g., she describes him flipping forward over the handlebars after being shot in the front of the head.”
Say, Mr. Mason...what happens when you let off of the throttle of a boat?
It decelerates rapidly, and assumes a nose down attitude. Jetskis especially so.
So now that you know that, what happens when you get shot in the head?
You probably let off of the throttle.