There's a lot of speculating in your post. Do you have any scripture or official SDA doctrine to base all that speculating upon?
Ok, folks--I am not here to bash, put down or tick off anyone. I am not here to create WW 3. This is a sensitive subject for some people and a huge road block to many Protestants, not just SDA's. I will try to word this as sensitively as possible, but let's get down to brass tacks.
Speculation???----Coffee--are you saying that Mary had one of her eggs fertilized by the sperm of the Holy Spirit in order to make her a "mother in every way?????" To call Mary the Mother of Jesus in every way is not accurate unless you believe the above. That is not something that I would in any way believe and is very much speculation. God created Adam--He is His Creator Father, but God is not Adam's, or our, biological Father!!!! He is our creator Father! It was the only way to produce Adam and Eve, create them and breathe life into them. We are the biological descendents of Adam and Eve.The same Creator of Adam, God the Father, God the Spirit, God the Son, (according to the bible) created this world and Adam and Eve---"Let US make man in OUR image."--It says Christ created everything that was created. Yet all were present. The 3 Musketeers--all for one and one for all, sort of speaking. And the whole concept of the Trinity is a study in itself that no one understands. They are one, but not, Christ did not pray all night long to Himself nor did He say, Father forgive them, to Himself. The Trinity is not the question put forth for now, though.
My stepmother mother raised me, a biological mother could have done no better. But she is not my biological mother, which diminishes her in no way. It's just a biological fact. The whole process of Mary being used by God to carry the Christ is not one we can, now, totally minutely understand. Speculation runs rampant on the whole thing of Mary being "forever Virgin", which is not stated in scripture. On her being our intercessor when the bible says clearly that Christ alone is our intercessor. When even Christ points to the crowd and says they are His mother and brothers, He did not elevate her to any lofty position, but set her as another human---and we are not to bow down and worship any human, nor their image. (Not even anyone on this earth nor in heaven) When Christ taught the disciples to pray, He said "our Father, which art in heaven"--never did He even slightly suggest to pray to Mary.
Mary was the chosen vessel of God to carry the Eternal Son of God, in His humanity (which God created in the first place and can create any time and will recreate again at the end of time). Please do not tell me that the Creator of this whole entire universe (without any help from us) could not use all His power (Their power) to change the Eternal one into a human--He is the originator of what a human is! It was Christs choice to become human, and what He proposes, He does!! Anything else is, indeed, speculation!
And you know what else---Right now, I really don't care what the SDA doctrine on this subject teaches! There is nothing in the bible that says we pray to, bow down to, worship, adore, venerate, anyone but God. Nowhere does the bible say Mary is our mother or the mother of the church, that she was the mother of Christ "in every way", that she was a virgin forever, All of that, and much more, is traditional, doctrinal, church hierarchy speculation!!!-----hmmmmm---no offense!?

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And I think it's time for the milk and pretzels.