Old age is a disease from which there is no recovery but the old nun's recent attack had certainly been brought on chiefly by the fatigue of so much travelling.
That the religious right completely took over the word Christian is a given. At one time, phrases such as Christian charity and Christian tolerance were used to denote kindness and compassion. To perform a "Christian" act meant an act of giving, of acceptance, of toleration. Now, Christian is invariably linked to right-wing conservative political thought -- Christian nation, Christian morality, Christian values, Christian family.