Hi there. Firstly im not a doctor. You need to make a list of questions and concerns you have for her welfare and care. To be honest it is obviously pretty serious and her doctor would have all the test results and first hands experience, so they are best placed to advise you Bring your list and go to see the consultant. Hopefully they can put your mind at rest and help you plan for her future care. The EF of 20% is quite low, but not the worst ever level. If they can stabilise things hopefully the situation will improve a little. Anyway best to try make her as comfortable as possible for now and keep her spirits up. God bless