What Is The Prognosis For Severe COVID-19 Pneumonia While On Oxygen Support?

Dear sir My mom is was tested positive a week ago for covid and then the doctors said that the virus had already reached her lungs and it has led to pneumonia . Now she is kept in ICU in ventilation and now she is breathing only with thee help of oxygen cylinders provided by the hospital. Her ct scan of thorax report says that a fatty infiltration of liver is noted and her ct severity index is 19/25 . CT pulmonary involvement score is about 60-70 percent and there is no significant mediastinal adenopathy .