Prior to 1895, Ellen never spoke of a third person Holy Spirit, ever! Some modern-day theologian-historians look at this and claim that Ellen changed her beliefs at this time. In fact this sentiment started with the 1898 publishing of "Desire of Ages", while Ellen was still alive and well. But is this true? It seems to me that if she decided the trinity was God, then she would have said so, using the word "trinity". Instead, on June 29,1898, Ellen White wrote: 

"Let  the brightest example the world has yet seen be your example, rather  than the greatest and most learned men of this age, who know not God,  nor Jesus Christ whom He has sent(John 17:3). Jehovah, our Father, and His Son  Jesus Christ are alone to be exalted. The knowledge of God is eternal  life to those who receive it. His holy banner is to stand elevated above  all the greatness of the greatest men, above all the honor and glory of  the world." -Ms11-1898 .  A trinitarian would NEVER make this statement! Yet, Ellen wrote this in a manuscript after "Desire of Ages" was finished.

Ellen was aware of the sentiment that her beliefs had changed after 1895 and adamantly denied this change -- many times. I have some of those statements recorded here.

So, what else could have happened to cause this sudden change in wording? A friend of mine, David Allen, has studied this matter at length and has provided this excellent historical report. 

I believe this to be the answer to the question I posed and highly recommend reading it...   -Sid Nash