MB should go on with his life the way he was doing before Kelli disappeared. He should be authentic as we all should be.
MB's life before was in FL. So what you are saying is he has no business being in Fayetteville because that's not authentic? The rent is continuing to be paid on the apartment (unless the management is waiving all rental fees). He is the legal spouse.
I bet if MB hung out in FL and didn't show his face in or near Fayetteville he'd be criticized for that too. I suspect no matter what MB does it will be considered the wrong thing to do. That's how it goes when members of the public decide a person is culpable without any factual evidence or even any information being available to suggest a link.
BTW, it was not common knowledge that NH was a RSO and homeless, for that matter. VOH explicitly told us this. Not VOH, not Kelli, not MB, not Justin from FL, not bar patrons, nor random unknown attacker rapists in the area, or even the bar owner (SC) knew of NH's RSO status. Had KB not disappeared that fateful night, I don't think anyone outside of those who knew before would know about NH's previous legal issues...not without specifically looking up the info or NH disclosing it. And we know NH wasn't going around disclosing this info--people found out afterwards due to the media reports, along with NH's arrest.
NH being a RSO along with being the last
known person to see Kelli that night, putting himself with her, alone, within minutes of her going missing, is what pole vaults him to the top of any potential perp list. Fair or not, he's on the list in the top spot for those reasons.
If it was someone else who attacked Kelli then yes, they got lucky that a previously unknown RSO was her chauffeur that very night AND that she wanted out of his car immediately AND that she wouldn't let him drive her all the way home AND she conveniently got out of the car suddenly, AND then she {poof} disappeared without her ride for the evening ever seeing anything amiss. That's a whole lot of luck for someone who isn't the guy who drove her away from FB's that night.
On another note, I've always wondered why NH said he too "needed to grieve Kelli" during his TV interviews. She was missing all of a couple days. Why would NH be "grieving?" Did he know she was never coming back again? I would have thought "worried" or "concerned for her well being." But no, he said "grieving." Interesting choice of words, that.