Barb, the ending is another way Three Billboards reminded me of the Coen brothers as they are big…
As you suggest, perhaps Three Billboards is a prequel to the Mildred and Dixon story in Idaho!
Barb, the ending is another way Three Billboards reminded me of the Coen brothers as they are big fans of Unresolved Endings. With Billboards, there is, I would argue, a sense of resolution in terms of Mildred and Dixon becoming a ‘team’, so their respective arcs move them into alignment. However, the fact they are going to Idaho with the intention — or not! — to kill Crop Haired Man definitely leaves the story in limbo.
As you suggest, perhaps Three Billboards is a prequel to the Mildred and Dixon story in Idaho!