Re: an unattended death
She went into cardiac arrest on the plane, so I’m not sure that is unattended, unless she was in one of those First Class cocoons on a ten hour flight.
Under CA law her death required an autopsy.
She didn’t get one.
She was not attended by medical personnel. Any death within 24 hours of admission to a hospital is still a coroners case as well. Any death after that requires the coroners release prior to moving the body. That said the coroner can release the body without an autopsy on any attended or unattended death if they do not suspect fowl play and they often do take the wishes of the family into consideration.