My sister had meningitis when she was born and and became deaf as a result. When she was a teenager she had a seizure. She did graduate from school for the deaf and blind. Neurological testing showed that she has a mind of a 10 year old when she was 19. Now she is 51 and was hospitalized due to a bad UT infection. She had fallen and the doctors did a CT-scan and MRI of her brain. For the first time ever she is diagnosed with congenital hydrocephalus. She only has 1/4" space in her brain that's not covered in fluid. A shunt is out of the question due to immortality percentage. What is her life expectancy without any fluid drained?