No, I'm not. I just don't get that sense about the whole thing.
Besides, they have already gone through enough.
IF they did kill mccann, considering the way the entire case degenerated into one ugly great clusterfuck, with the portuguese pigs acting about as professional as coco the fucking clown; I see no way that a case could now be brought, certainly not without potentially harming the remaining, living, un-fucked children psychologically and emotionally.
IMO if the mccann family DID somehow cause madeleine's death then I don't think it smells like murder. Accident and panic I cannot rule out, but if the death was accidental, then they should face no pig crap anyway. And not to mention that at least one of those foreign pigs seems like a right nasty incompetent, selfinterested loudmouthed O2-embezzling prick.