I believe that Chris misspoke when describing that TN and BM's mom were living right next door to BM in Colorado.
Chris was recently visiting Indiana where he was filming and touring the areas where BM grew up, his church, schools, childhood home, etc. --just before Chris received information causing him to abruptly leave Indiana and arrive Colorado hours prior to BM's May 5 arrest.
IMO, I believe Chris was most likely referring to BM's childhood home as where his older sister (TN's mother) might reside near next to or near Mrs. Morphew in Indiana. I think Chris implying this was true of Colorado was just a mistake. MOO