I don't think I would be looking at this so critically if the stated story was DNV did not have a good relationship with her ex and his family, so they did not think to get involved in DNV's issues until Friday. I think everyone understands that custody issues can be straining and not all parents have a good relationship with each other. It's not a crime to not like your daughter-in-law. Mother-in-law jokes are funny for a reason.
I think it's this saccharine veneer painted over a more complicated public record that is throwing people off. Why release information that is constantly changing or contradicted by verifiably public records like court cases and arrest records? Why was this "timeline" released with a public case against DW being tried by private FB groups? Why the insinuation of police corruption and political connections? If you are going to try to control the narrative you shouldn't state publicly that you are trying to "control the narrative" and then get upset when people with no connection to the case or any parties question the story.