MY MOTHER IS DIAGNOSED WITH 4TH STAGE LIVER & KIDNEY

MY MOTHER IS DIAGNOSED WITH 4TH STAGE LIVER & KIDNEY DISEASE CAUSED FROM ALCOHOLISM . SHE IS 83. HER TUMMY IS DISSTENTED AND HER LEGS ARE QUITE SWOLLEN AS WELL. SHE IS ON QUITE A FEW MEDICATIONS (LASIX XIFAXXIN SPIRONLACTONATE PROPANANOL) TO NAME A FEW. SHE HAS BEEN HOSPITALIZED FOR PNEUMONIA & SEPSIS IN THE LAST MONTH.... WE KNOW SHE IS TERMINAL AND NO CHANCE OF RECOVERY ONLY TRYING TO KEEP HER COMFORTABLE.I AM WONDERING HOW LONG THIS TYPE OF ILLNESS COULD GO ON. MONTHS OR YEARS ?