Please forgive me, jashrema, for speaking of this. I am sorry to imagine how hard this must be for you.
But, is it possible that they are not digging for Sierah's body, but maybe some other evidence? The reason I ask is because I can't imagine them needing heavy equipment at this stage of the game, IF she were buried there. It would only have been a few days ago at most and the ground would be freshly dug, not all that compacted yet by the passage of time. Right?
Furthermore, wouldn't you think they'd try to dig by hand so as not to damage her body if there? (I'm sorry.)
Not that I could guess what else they would be digging for, maybe something much bigger and non-human?
I guess I am just holding onto hope that she is still alive somewhere and they're looking for something, anything, else.
Is that a possibility?