Not sure about facelift patient's complaint
Regarding, the older facelift patient, at first i was completely convinced that she was the victim of a botched surgery and that all her complaints were valid. Certainly the "sagging" of the skin looked wrong and had to be remedied. But her further complaints (cant swallow, cant breathe)-- why is it all the specialists she goes to see nothing? It may be that the initial surgery left her tissues with a feeling of "otherness" or "differentness", but after a while, it seemed that there was some other psychological component in the equation. The MRIs show nothing, ENT specialists see nothing. (When the ENT asks her a question and she makes this weird face as if to say "See, it hurts when i do *this*?" So dont do that?) This might also have been the fault of the filmmaker, who didnt want to commit to a point of view that veered to either psychological or physiological, so s/he left it ambiguous.
And asking for the doctor to posthumously dissect her to find the problem? Imagine you're the doctor given that request. To whom exactly are you to report the results? Is the next of kin going to be all that interested? It makes no sense. And the doctor is possibly unethical in agreeing to do it, as it might make an unstable person more likely commit suicide so that, paradoxically, the doctor could "find out what the problem is."
After looking at Iacovelli's website, i think it's more likely she's OCD regarding her face and her post-op facial features. Its strewn with a gargantuan, disorganized array of letters, photos, complaints, and invective, intelligible perhaps only to herself.