Just jumping off your post. Even if the prosecution has a lot of evidence against against Emily to have tried her in the death of Lucas. It doesn't mean she would have been found guilty. So we will actually never have a complete answer to the guilt. We may have a manner of death and a cause of death but not actually who caused the death, as much as we want. I think we all know who did the deed.
Now Emilys death is totally different it is either suicide or homicide which is the manner and then the cause which would be the rifle.
jmo
But within that, I thought they could still say who the prime suspect is (as she's deceased) and that they're not looking for anyone else in relation to the homicide? Which is effectively saying that EG is the person they would take to trial for the homicide if they were able to.