Sometimes people will fracture bones because the cancer had spread to the bone making it weaker. These are referred to as "pathological fractures" so the two different stories are not necessarily incompatible.
Good luck finding out anything about anyone in his family however.
He doesn't have to worry about her giving any secrets away any longer either.
I think they pulled her feeding tube while Obama was out there before the election. The timing is just about right for death to follow the day before the election.