It is not easy being a prophet. Especially when your followers expect you to be able to detect falsehood, accurately predict the future, and correctly interpret the Bible.
Being a prophet is difficult enough, without the extra burden of having serious health problems caused by a childhood brain injury. Yet Ellen White accepted the prophetic calling. She never could have done it alone. In fact, she had plenty of help in her prophetic work. Her close associates were instrumental in hiding her mistakes, glossing over her blunders, covering up her faulty visions, and "whiting-out" her failed predictions.