Yes, I forgot! They exhumed her body, presumably to do a few tests and take some samples, yet this was never mentioned again. I'm assuming the results are being kept secret for the investigation.
Oh, and if the remains of my new husband's children were found buried on my property, I assume I'd be in A LOT of trouble, regardless of what they could prove.
That said, the Daybells are in jail, not walking around free, so it's not like they've escaped justice. For once, I trust that the authorities are going to find a way to keep them there, because you just know that not a single person in law enforcement thinks they're innocent.