This is the issue. That reasonable minds might differ, and that the more reasonable minds who are closest to the situation - and many not close at all but distant witnesses - agree that she is indeed communicating. I tend to be cautious in matters of life and death - especially when the powers to adequately bargain the issue are utterly lacking in someone so disabled.
I view it with a grain of salt that it is comprised of love and hope. It is usually nothing more, but I have not seen the girl in person so I cannot be sure what they saw.