I long since considered it a possibility. She very likely could have that and be unaware. Once you start having the nerves die, you really don't know.
If you read Endurance, a book about Shackleton and his expedition, one of the crew members actually ends up with his toes becoming frostbitten, and they actually dried to a hardened mass and were cut off. Now keep in mind, they were in arctic conditions and thus it was naturally dry, but Hamber could legitimately have similiar situations with chunks of her flesh dying off from deprievation of blood etc, and thus nerves dying.
Except in her case, given she's sweating constantly, never bathed, and also defecating on her self and is unlikely to be aware she has her own urine soaking her skin..she's far more likely to go gangrene and have the septic stuff hit her blood stream and kill her that way.
Seriously Hamber? Go to a doctor, stop fucking denying this shit, or save your self alot of pain and swallow a bullet. You don't want to have flesh eating bacteria kill you. It's far far worse then any thing you can imagine. There is -no- medication to stop that sort of pain. They can chemically induce Coma, but really that doesn't stop the pain. It just stops us from knowing you feel it.