Suggest Remedy For Hypatic Coma Due To Persistent Fever

my mother is suffering from fever last two months...now she is admitted in Apollo,hyderabad...but the condition becomes critical. The panel of doctors are not giving any coclusive report....and now my mother is in hypatic coma...so please give me some suggetion ....what should i do. (C.T scan,blood test,laproscopy are done and the doctor are found nothing)