19.2.22

My sister had a blod clot in her leg that travelled through a hole in her heart to her brain and subsequently had emergency surgery to remove it, she suffered a massive stroke and is still in hospital, after being to and fro several hospitals and  she was told she had cancer and then told she did not. Tests after tests, scans etc, we were told she has cancer but they do not know where it is as they can't find any tumours, she is constantly feeling and being sick, no appetitite, has pain all over, but the doctors do not know where it is, they have said because she is having clots while on blood thinning tablets and is feeling sick it is a sign of cancer, she is too weak to have any treatment because of this, and we have been told she will die soon, what can we do ?