Newest thoughts (and maybe completely wrong):
What, if the parents had a meeting at the mall, where they had been seen to be shopping. This meeting wasn't video taped by surveillance cameras, because someone knew, where exactly cameras aren't placed (public toilet?). The children were for a reason given to someone unknown (to us/LE), rather NOT family, and Lilly and Jack didn't get home in the evening. Afaik, nobody has confirmed, that the children returned to their mobile home with their parents.
The following night the children didn't sleep in their clothing, they were wearing all day, and Lilly didn't sleep with her backpack. They weren't at home at all and also weren't in their beds. They were already absent, forever.
Afaik, we heard nothing from the evening and nothing from the night. Oh wonder, there was nothing to tell by DM. We only heard a story from the morning, which must be fictitious. It didn't happen. Why DM's mother allegedly heard children in the morning at a certain time, I don't know. Did she lie? Did DM, very sophisticated, play a voice recorder with children's chatter and his mother didn't recognize it, because she didn't come outside? On the other hand, repairing a fence (DM) and shoveling somewhere for a swimming pool (his mother) seems odd, when just then the 2 children "disappear" - looks like an alibi for both of them ("I wouldn't have done it, if I had known; so I am innocent.").
How it went from there on, we all know.
I can think of a CPS person, who knew people or a pair, who unofficially wanted 2 children. The CPS person persuaded MB to give her children away, promising, that MB in some form can keep in touch with her children. It was known, that MB was overwhelmed with her duties and wanted to get away from DM, therefore she agreed. DM didn't mind getting rid of the tiresome children (and didn't know, that MB would run away afterwards). So both agreed, then created their story of the disappeared siblings, beginning their lies with Lilly and Jack being annoying in the morning, when the parents wanted to stay in bed. Both adults MB and DM now have to stay with their story and aren't able and willing, to throw the other partner under the bus (despite separation!!).
Yes, the woman with the golden car, waiting at the open backdoor of her car, and the 2 children walking along a road in the direction of the car, doesn't fit my theory at all. IF the children were indeed Lilly and Jack, then they came from home, and my newest story is invalid ......


All MOO and
speculation!