Let me ask you something ... many years ago Michael Schiavo sued the Doctors for malpractice for not discovering his wife's potassium imbalance. He won quite alot of money for that, didn't he. Don't you think that if there was ANY evidence of foul play the lawyers representing the Doctor's would have at least hinted at it?
I think the lawyers that made that decision based it on the amount of money they risked either going to court verses what they risked cutting a deal and cut a deal.
I think that actually going to court and appealing to a jury's decision was the last thing they wanted to do with a weak case or not.
And no, they were not going to play Miss Marple and try to delve into anything resembling Truth about it.
They couldnt care less I am sure.