How much longer? ESLD

HI everyone,

My mom is currently suffering from ESLD due to autoimmune hepatitis. I knew she had liver disease buy not the severity. The past three months have been a struggle, in and out of the hospital. Last week she went into the hospital for persistant vomiting. Since then she has had bouts with encephalopathy, a suspected heart attack, continued vomitting, and now loss of speech. Her vitals remain strong although last night she had to be given oxygen due to the pulling in her chest while breathing and was rushed to the ICU. There is no doubt about it, she is suffering. How long does this normally last? The drs just keep telling me we'll take it day by day. Any experience you can share would be appreciated. No one should have to suffer like this.