With the indoctrinated black & white mentality of all JWs, you are not going to accomplish anything toward them. They will not/cannot break the indoctrination from the inside. Not without direct shock to their own systems. In order for that to happen, it would take a willingness to actually see and critically analyse what all the Watchtower leadership is doing wrong directly (how talks are structured around "persuasive speech" techniques; how many of their teachings are wrong/unscriptural/unnecessary burdens [can debate cross vs stake until cows come home and no one will ever be proven right or wrong on it]).
John 1:1 Greek wording is discussed here:
http://www.reddit.com/r/AskHistorians/comments/22bfpk/what_is_the_most_accurate_translation_of_the_bible/cgl8h0t
Perhaps you should assess what the actual goal is on your end of things.
Your sister is shunning you without cause. As a bible student, I made more than a few disasterous life decisions, and not a single witness deemed it necessary to shun me. Ever. Hindsight shows it was all part of the love bombing process, not anything superior in JW love at all. The sis who studied with me showed the difference between pre-covenant Israelites - eating birds without giving thanks to God first did not get them killed- versus after covenant situations that very much ended with people ending up corpses.
Pre-baptismal candidates = getting seduced by people already on the inside. You're special (drawn out by Jehovah Himself, no less!!1!!), brilliant, pretty, witty, showing a spirit of discernment and understanding... blather bloober bloop. All hogwash designed to flatter and ultimately seduce.
vs
After baptism = all the ugliness, pettiness and outrageousness coming to the fore. Personally, I didn't even know we were supposed to be bowing, scraping and general ass kissing to anything called a "governing body" until well after baptism. Also had to be corrected a few times when I used the reasoning that is put to people being proselytized to, instead of the separate rule set for people already on the inside. If you're female, you are dirt, garbage, cannot manage your own affairs and have to accept every nitpicky shitty piece of "counseling" (someone doesn't think your shoes or skirt are formal enough for field service? Yup, that's a'counseling) that comes down the pike.
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Just to show odd wording differences between people being seduced (or goosed along if they are showing signs of weakness/struggling with concepts) verses people already under the hypnotic influence of the leadership (head-nodders):
Study edition November 2013
17. What four conclusions can the elders draw from the account we have considered?
17 Elders who are reading this article can draw some useful conclusions from the account we have just considered: (1) The most practical step that we can take to prepare for the coming attack of “the Assyrian” is that of strengthening our faith in God and helping our brothers to do the same. (2) When “the Assyrian” attacks, the elders must be absolutely convinced that Jehovah will deliver us. (3) At that time, the life-saving direction that we receive from Jehovah’s organization may not appear practical from a human standpoint. All of us must be ready to obey any instructions we may receive, whether these appear sound from a strategic or human standpoint or not. (4) Now is the time for any who may be putting their trust in secular education, material things, or human institutions to adjust their thinking. The elders must stand ready to help any who may now be wavering in their faith.
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Simplified (public?) edition November 2013
17. What four lessons can the elders learn from the account we have discussed?
17 Elders, you can learn some helpful lessons from what we have just discussed: (1) The best thing you can do to prepare for the future attack of “the Assyrian” is to strengthen your faith in God and help your brothers to do the same. (2) When “the Assyrian” attacks, you must be completely convinced that Jehovah will save us. (3) At that time, the direction that you receive from Jehovah’s organization may seem strange or unusual. But all of us must be ready to obey any instructions we may receive, whether we agree with them or not, because obeying these instructions will save our lives. (4) If any are putting their trust in the education of this world, material things, or human organizations, they must change their way of thinking now. You must be ready to help any who may not be putting their complete trust in Jehovah.