I've only so far read the first bit about Diane. That's some interesting puzzle piecing. It makes sense....in the same way it makes no sense at all. ?
I think we could find a lot of things to piece together like this.
I think we are looking at the timeline inconsistencies again, alternate realities. Once we know that Cooper will go back and "save" Laura, we are pretty sure there now have to be 2 versions of the facts, official and unofficial (I still wonder which one is which).
This also indicates something that makes me very sad. It seems that whichever timeline Cooper decides, somehow it all ends up exactly the same in the end with only the slightest variations in the scenarios. Is it fate, or destiny, or such intrinsic human nature that we are doomed no matter what we do?
Not neccesarily, but it does mean that unless Coop learns to let Laura go, he is doomed always to failure and, like a computer game, Laura won't get the FWWM 'good' ending where she finds peace with the angels.
Part 15, outside the Convenience Store, Mr. C texts "Las Vegas?"
This is some parts after Diane received that text.