Beyond what the medical examiner said about when the gun shot happened, going to get the knife - having time to do that- is exactly what Juan was talking about today. She didn't have time. That was his argument EXACTLY.
I have gone back and forth on which came first.
But what sticks with me is her ninja story, where Travis is shot, is down in the bathroom, and the male ninja "left the room for a minute." I mean, really, why insert that? It doesn't flow with the story. That makes me think its possible that the gun DID jam, and while TA was down in the bathroom, she (she being the male ninja character in this instance) ran down and grabbed a knife. It would be a straight shot down the stairs, no turns, just straight into the kitchen and back up the stairs.
When she got back, TA could have pulled himself up by the bathroom counter, turned and tried to get down the hall. That's when she returned, stabbed him everywhere, and the photo we see is the final cut in progress.
I think it's possible. The autopsy report is not definitive about the bullet being incapacitating. And the gunshot wound and trajectory match exactly with shooting him while he sat in the shower.
But it doesn't really matter except for the curiosity factor. Whether she shot or stabbed first, she murdered him in a premeditated act.