Yes.
"Yes."
So you are trying to get us to believe that all of her family that was there, the news reporters, the funeral home, EVERYONE is in on this without a single person telling whoever orchestrated this supposed coverup to go to hell??
Most people can't get their family to agree on what restaurant they should go to or whose turn it was to do the dishes, much less something like this. Perhaps she was murdered, I might go as far as admitting it's not outside the realm of possibility, but you are past the plausible here and right on out to bat-crap crazy if you really believe everyone played along with this.