I have read a half of your post, and will read the rest of it and the replies at the next session. I think partly because your invitation to read a book put me off. Not that I regard this as incorrect, but why would I read this book as opposed to any other book, notably as I had not intended to read any book at this time?
It is an account of more than thirty years of voice-hearing. It ranges from the moment when “…a presence that I could not see moved from the space in front of me into me and my mind was charged with another ‘voice’ or provoker of thoughts – thoughts over which, then, I had no control and which were not initiated by me. In my mind began conversation as between two separate people, one of whom was me – I began to hear voices.” It ranges from then, right up to the present moment, when I still have the voices intruding into my thoughts and a physical presence intruding into my body and senses.
So do you give yourself wholly to this form that was in front of you, and have you considered how things would be for you had you chose not to do this? For even if it were the Spirit of God, that doctrine to which it belongs would still require you to speak in such way as to accord with it. If that is not the case, then why would your book be any different to anyone else's book on similar subject matters?
Have you considered the possibility that what you saw was purposed or happened merely to inform or remind you that we are capable of being creative?