According to what I read, supposedly from her family, her true condition was hidden by a neck and should injury from an accident that led to misdiagnosis. By the time the error was discovered, it was basically too late.
Just an excuse. As far as I am concerned it is never too late as long as the are still breathing. I have seen people turned around from their death beds by using the 666hz frequency. So using the excuse that someone was too far gone just because what they were doing simply does not work is nothing but an excuse.