"There are places we can't return"
When I was re-reading the SS, I noticed two references that I'd skimmed over before...
At the time of their last trip together, Ennis isn't living in Riverton, he's "...in Signal where he was working now for Stoutamire's cow and calf outfit"
and also, "...Ennis was ready to head back to Signal, Jack up to Lightning Flat"
In the movie, he's living, or at least getting his mail, in Riverton at the time of Jack's death. And his trailer is outside of Riverton.
Why the change in the movie from the story do you think?
And why did Annie have him go back, at some point after the divorce, to where he'd met Jack?