I am still waiting for someone to show clear and unequivocal proof that Ellen White never did, and doesn't hold any authority in the church, and that she never did, and still does not hold any authority over a man. Until then, you and your arguments hold no credibility. You cannot have a woman in authority, and maintain that women cannot hold authority.
So I take it that you are for women's ordination, assuming that you don't see the proof you want.
I am for consistency.
To be fair, we need to realize that Ellen White, since her death, has assumed a superhuman status in many people's minds. For many they don't think of a flesh and blood woman who functioned as a normal woman when Ellen White's name is mentioned, they think of all the books and messages.
Now, we believe her writings are messages given to her from God. Thus the authority behind the messages isn't the woman but God Himself. She, in and of herself, has no authority today, it's only when we believe her messages came from God.
Then the messages are authoritative that is very true.
The question here is -- is it the woman or the message that has the authority?
I realize sometimes the two get confusing, especially when one reads the history of 1888 and onward, where EGW wrote a lot of strong letters to men in leadership positions, and worked tirelessly to get these men to stop their devisive attitudes and actions.
However, it was also during this time that her 'authority' was at a low ebb, many of these men thinking she had lost her prophetic position. And if that were true, she had no more authority.
As far as administrative authority.
No -- EGW was not THE founder of the church (though she was part of the group that first formed the church). She was not the originator of Adventist doctrines; though through her visions she shed light on these doctrines as men like James White, J.N.Andrews, Joseph Bates, Hiram Edson and others prayerfully and thoroughly studied scripture to find the truths. Actually she didn't even understand all the theology these men were carefully digging out of the Bible It was only when they came to an impasse that God revealed to her through vision which way to go.
Ellen White largely left the running of the church to men -- GC presidents, magazine editors etc. Men stood at the head of the church as the leaders.
Yet EGW often wrote testimonies to these men when they strayed from God's blueprint. And when these men started exercising "kingly power" she revealed the plan and urged forward the work of a complete restructuring of the world wide church's leadership.
So in conclusion
Ellen White did not assume any high leadership positions in the church, (like President, etc) those positions were held by men.
So the "headship" being male was upheld.
But Paul has other verses that command women to be silent in church and not to speak or teach or to have authority over a man.
A large portion of her messages were "teaching" and counselling these men who were in leadership.
She most definitely spoke in church -- preaching many a sermon and discussing Biblical themes.
So really --
It depends on how one explains the verses written by Paul concerning women's conduct in church.
According to most of the explanations concerning these verses, one must first be introduced to the culture of the area in Paul's day and rationalize away the more obvious meaning.
Most explanations do away with the "keep silent" clause -- some by pointing out the seating plan where men and women were segragated within the church and women weren't supposed to talk to their husbands.
Others say it's not church meetings, but a business meeting of the church in which women weren't allowed to speak.
If that is the case than EGW would have often been in violation.