Could it be that all the locations in The Return form an 8 on the map, geographically? So when Jeffries says 'I'll show you where Judy is' he indicated a dot on the 'southside' of the 8, the coordinates for Odessa, Texas?
Numerologically speaking, eight represents a trap. From the octopus' eight ensnaring tentacles to the eight-legged spider's web to the eight-sided stop sign, eights capture.
Richard and Linda start with R and L, representing right and left, the right and left of the infinite sign.
If it's not a peace of furniture in the window, it might be Judy, who Philip Jeffries - being a teapot - refers to when shows number 8 to Cooper with the smoke.
There are 3 windows and over each of them a number. Judy is over number 8.