Mother Is A Severe Alcoholic. At Day 11 She Began

Mother is a severe alcoholic. At day 11 she began having difficulty breathing. We called an ambulance. They ended up due to how severely she was detoxing having to put her into a induced coma. They also found she was anemic and needed 2 transfusions. She developed phnemonia while on the ventalator for 5 days then had to have Thoracentesis. The have taken her off all the sedatives for 2 days and she has not woken up. How many days is it usual for it to take?