Royal confidentiality, if broken, would be deemed as treason. I think treason is still punishable by death in modern british law. The nurses "neglegence" resulted in personal royal details being reported around the world against their will. The nurse was the person who put the call through as genuine. The ward would have assumed the necessary checks were done before putting the call through to the medical team. The nurse may possibly have been seen as the point of origin for the mess, a gatekeeper who's negligence saw the situation spiral out of control. Thats my guess... It's too much of a coincidence she drops dead unexplainably if you ask me