I think in older smaller types the bed area is in the part that fits over the hitch/bed of truck, but I do not know that for sure.
It appears the bed would be to the right of the door, just as you step inside.
How high up would the bunk be?
Meaning how high up off of floor level would KR be when sleeping.
Looks like it could be pretty high.
How tall is AW? I think she is pretty short. Unless KR was propped up on one elbow as has been theorized.
Another thought - look at the window to the right of the door. MO. THEORY
Would it, could it, have been open, and therefore a shooter, standing on the deck, could take aim from an outside position?
I don't know anything about trailer windows. Window size, opening, could a tall thin person stand on deck, or maybe a chair from the deck, and aim?
This could explain the dog not attacking, but would not explain the door not being locked when DS went there to check.
In either case, measurements of the height of bunk bed and the height of the shooter, plus measurements of window height from deck could be helpful.
As has been said, if KR were in bed, but lifted up on one elbow, anything could be possible, and any shooter, regardless of height might be able to accomplish it.
The window theory does not easily support the "money strewn" on the bed.
Unless shooter entered after the shot and was looking for something, probably KR phone or gun. But that would mean the door was unlocked or shooter entered thru another window?
Would KR have been sleeping with several open windows?
Could a tall, thin, W person climb thru?
Too many open windows on all Rhoden trailers...