Actually a medical examiner can, and they did. She was an Obese Diabetic with Hypertension and a Cardio-Pulmonary Disease walking around with a blood clot.
She was going to to have a heart attack or aneurysm in the VERY near future.
There is NO conspiracy here, just a family struggling as they grieve, grasping for answers.
Now as to your link. It's just a page of about 100 weekly reports that are about 34 pages each, so I am gonna need a little bit better than that, or else it looks like you are just making things up.