Hi thanks for asking question.
I can understand your coconcern.
First of all if financial good then for
cirrhosis liver transplantation is available.
But as she is old age just now I think no need for transplantation.
You can take prescribed drug like that of olanzepin , but along with drug mental support needed for her.
Get her to the evening walk or some kind of activity.
Advise her to meet some family members or other friends.
Advise her to do
yoga and light daily exercise.
Meanwhile keep her on low fat diet and less refined food and sugar.
Take green leafy vegetables.
Give her fruits juices daily.
Cumin seed powder in buttermilk taken daily could be good home remedy.
I hope your family support gradually bring her from
depression.
Wish her good health.
Dr.Parth goswami