I don't think anyone on here who believes at least on of the persons involved in the death of Mariah is certain of the manner of death other than homicide. We
need to be clear on that. Not one person has stated "EL is guolty
of first degree murder."
LE may know the COD but is still putting together facts in order to determine whether this was manslaughter, second degree murder or first. That can take time, folks.
A great recent example is Kaytlynn Cargill's case. She went missing on 6-19. She was found on 6-21. Her COD was officially determined on 8-10. But the autopsy wasn't completed at that time and they said it could take another month.
A suspect was arrested on 9-1-17. The chain of events indicates they knew it was him (search warrants) by 6-25. He was the only one they were looking at.
http://www.wfaa.com/mobile/article/...ammer-after-suspected-drug-deal/287-470159288
In these cases they get one shot to prove their case. If they undercharge and later find evidence that supports a greater charge, no dice. Double jeopardy. If they overcharge based on initial assumptions, they can lose the case and that's that.
This isn't CSI. These things take a lot of work and time.