Here is a lesson from the Casey Anthony trial, the prosecutor went for the big shot with a reasonable case and they lost. Now if they had individually charged her with everything the could absolutely prove she would probably be in jail with 150 years and parole at 105 years old.

They learned not to roll the dice and stack absolute charges, hoping for a confession and life. I will say I hope the FBI is watching every move but I think the slow progress has more to do with needing details.

I agree there is zero reasonable motive, which is a huge stumbling block and probably what they are hung up on.