What are the possibilities in the case of missing siblings Jack and Lily Sullivan?

Possibility one: They wandered into the woods and got lost.
After days of being out there, they are most likely no longer with us, and the police are now on a recovery mission rather than a rescue. It’s a devastating possibility to consider—truly heartbreaking. But if this were the case, wouldn’t we have found something by now? A shoe, a piece of clothing, some sign of struggle?
Investigators have confirmed Lilly and Jack Sullivan were seen in public with family members on the afternoon of May 1st, the day before they were reported missing. : r/TrueCrimeDiscussion
Possibility two: They were met with foul play in the home—and it was covered up.
Could the mother know what happened? Is that why she moved out of the house shortly after, blocked Daniel, and lawyered up? Is she already working on a legal defense—or did she simply need to escape a dangerous environment? We have to ask these questions, especially when her actions seem questionable and out of step with a grieving, desperate parent.
May be an image of 4 people and text that says 'COULD COULDITBE LDIT ITBE BE ΑΝΕ'
Possibility three: They were abducted—either by someone they knew, or a stranger who saw an opportunity.
Before I share a theory that’s been circulating online, I want to ask you: Which of these possibilities makes the most sense to you? Let me know in the comments.

Now here’s that theory:

Jack and Lily may have been following their usual school routine. The parents were still asleep. Lily grabbed her backpack. They both put on their boots. Then, they walked together to the end of the driveway to wait for the bus—just like any other morning. A passing vehicle spots them, sees an opportunity, and abducts them.
This could explain why the dogs lost their scent trail at the end of the driveway.

Is it possible? I think so.

But police disagree. They say there’s no evidence pointing to an abduction. And that makes me wonder—do the police know more than they’re saying? Do they have evidence suggesting the children are no longer alive? Or could they have made a critical mistake by ruling out abduction too early?
Investigators have confirmed Lilly and Jack Sullivan were seen in public with family members on the afternoon of May 1st, the day before they were reported missing. : r/TrueCrimeDiscussion
Both the mother and stepfather have insisted from the beginning that the children were abducted and have pushed hard for an Amber Alert.