Alright theory time,
So when I took a look closer at the bones from episode 9 I noticed they were too big to be child bones, the skulls and rib cages gave it away too big.
Take a look
You see what I mean.
And I kept getting confused this season about where the bones were and why they weren't going to where Tabitha had said earlier, "The children stuck in the tower", which means that's where the bones are, probably still laid out on the slabs of stones waiting for their parents to come get them. But most importantly their mother, I believe their all Tabitha's kids and that's why they cling to her, they want their mama.
Which brings me to a theory I found on tiktok username: @arevertsdairy. That the bones are either Jades or jade AND Tabitha's. Which is brilliant because it ties back into why Jade was getting dragged into the tomb. And it being worse for Tabitha is not only losing her children every cycle but being buried alive with her dead husband/soulmate every cycle.
It feels personal too. Yes towards Jade but more so with Tabitha (Tabitha witch theory).