In the attached video from 2023 at the 2:19 minute mark we see a snippet of an interview of BM and both daughters.
When the daughters were asked "was there any indication before she disappeared that something was amiss", both daughters indicated there wasn't: Mallory (older daughter) said "No", Macy (younger daughter) shook her head. But their responses contradict information found in texts from SM that indicated the youngest daughter had suggested that her mother get a "restraing order."
( Page 10 of the unredacted case file):
Unredacted case file
Macy's boyfriend said she told him her parents "argued frequently." He also pointed out to investigators that the bedding was stripped off Mallory's bed, which was unusual because Mallory doesn't live at the M residence.
Investigators asked Mallory to describe her bedding at the Morphew house, she said that her bed is always made, her sheets and pillowcases are light blue in color and that her comforter is brown and reddish.
In multiple interviews with the FBI in 2021, BM denied that he and SM discussed divorce.
It appears at least one, or maybe both daughters misled or lied to LE at one time or another. May we safely assume both sisters were aware of and discussed their parents' situation? Why would the daughters appear to support their father knowing of the grief and strife he had caused? What could he have said to them to make them not consider his guilt, to make them outright deny to others that he would not have done such a thing?
I believe the younger daughter, having been living at home, likely would have witnessed more than one of her parent's blow-up confrontations, and likely will be a reluctant, but prominent, witness in the upcoming trial .. assuming BM doesn't plea and there is a trial.
As for the older daughter, while responding to questions during the 2023 interview, she glanced a few times and slightly nodded at her sibling, as if to ensure 'we're on the same page, r i g h t?!' .. sticking to the story, as it were.