I know a few kids that everybody (Including the parents) knew were destined for prison. In fact one of them found a skeleton in the camper behind their house. Even the FBI got involved in that one. The little bastid broke into a crypt.
Grave robber, that’s macabre, though not like a bloody murderer would be.
I think that’s the case here - she knows her boys. These type of kids are missing a conscience or something - something about death, crypts that they gravitate towards.