This may be too far out there or far fetched but i was just thinking, do you think maybe police jumped the gun by arresting Sarra for Mari's death? I know there was an article written that stated that Sarra was in the house with Mari and there was blood on her clothing but what if there's more to the story?
Of all the victims' families, she was by far the most outspoken. She's also the one with the lawsuit against Hacket and at least from a civil standpoint, should she win, it would mean he's responsible for Shamnan's death. If most of us here agree that he played a role, or rather he was the main character, in her death, then that makes him a murderer. If he killed once, why not again. Through the lawsuit, I'm sure his own lawyer had to do an investigation, maybe he learned Sarra was mentally ill and somehow used that to his advantage by either framing her or offering her a very nice chunk of change.
I don't think the Gilbert household was a sound enviroment for those girls when they were growing up and they probably struggled l. Money does funny things to people. With Mari out of the picture and Sarra in jail, I assume the lawsuit is now dropped. Maybe I am wrong. I know it's very far fetched but you never know!
ETA: Mari's sister was also quoted saying there was no known issues between mother and daughter at the time.
