jedigrover

I don't think her limited English abilities will hamper her in the U.S. any more than it does the millions of other folks here who have limited command of the English language. Certainly, a better command of the language will be helpful, but that can also be acquired much more quickly by experiencing the language first-hand everyday. As it is, she gets to talk to me an hour or so each day, and the rest of her day is Vietnamese. She has taken English classes, but they do not seem to focus on oral comprehension at all.
As regards our relationship, we are both very patient with each other. I have found that the language barrier has been more of a reducer of potential arguments as opposed to inciting disagreements. We both make the assumption that there was a miscommunication and cut the other some slack: he/she probably just did not understand what exactly I was trying to say. This allows us to come at the issue with level heads and from another angle. In one year, we have only had one conversation that could be characterized in any way as a quarrel. It involved a lack of understanding regarding how tired I was when I visited and my body clock was off by 12 hours. She took a statement I made very personally when I didn't mean it in such a way. We put it behind us and went on. It's one of the things I absolutely adore about her: her ability to let little things go and not blow up into something big.
I do often wonder how much of what I say is really "getting through" as opposed to just getting a nod. I spoke with the husband of her cousin, who confirmed that he has experienced some of that even after marriage and after his wife has been here for a while.
All I can say is that we both understand it will take time. I'm quite certain in our ability to communicate important things.
I am taking a more active role now to discourage use of Google Translate and to not type so much of what I say--so that she has to practice listening more.

Update:
I sent everything by DHL Express & it arrived Monday morning. She filed it and they had her wait while they reviewed it. They prepared a pink paper for her, which they kept along with her passport. They told her 10 days - 2 weeks, they will send the visa by DHL. No extra interview required.
I'm a little in a state of disbelief, but this is great news!
I'm trying not to get too excited until I actually see the visa.
She learned the outcome while I was asleep and did not message me. This morning when I got on Skype with her, she was smiling and told me the news.
It feels like a great weight has been lifted!

Update:
I sent everything by DHL Express & it arrived Monday morning. She filed it and they had her wait while they reviewed it. They prepared a pink paper for her, which they kept along with her passport. They told her 10 days - 2 weeks, they will send the visa by DHL. No extra interview required.
I'm a little in a state of disbelief, but this is great news!
I'm trying not to get too excited until I actually see the visa.
She learned the outcome while I was asleep and did not message me. This morning when I got on Skype with her, she was smiling and told me the news.
It feels like a great weight has been lifted!

Indeed. I agree completely. I would add that if normal couples were put through the relationship test / wringer like immigration, maybe the divorce rate wouldn't be so high.
One thing that is irritating is that it is completely possible for me to meet someone in America who doesn't speak English, start an online relationship, meet them in real-life--in short, do everything I have been doing in this situation--and because it doesn't involve immigration, just go down and file for a marriage license and get hitched, no questions asked. Or fly to Vegas for the weekend. While I understand the concerns about immigration fraud, I'm not sure that seeing whether someone can answer 7-10 easily memorized facts is really helping ferret out such things. The later AOS / Green Card interviews, as I understand it, are much more comprehensive and realistic for determining whether a relationship is genuine.
I have put together a letter and backing evidence that I am sending by DHL for her to file at the consulate--after having her attorney look over it. I had it all notarized. I thought at the last minute to include a note that if another interview is required, I want to be present.
Thanks for the words of advice. I really appreciate it!

Thanks for clarifying. You two then seem to be communicating as best as you can.
It can be nerve-wracking just facing the reality that a total stranger (CO) has your entire future in his/her hands. What really upsets me a lot is seeing genuine couple who love each other, like the people on this site, having to jump through fire hoops to be united the legal way, when there are so many in the USA who are here illegally and have no obstacles to overcome to adjust status.
I wish you luck!

when I met my husband I knew basically 0 english and he didnt know spanish. he gave me his email to keep in touch and we would chat using google translator.
I learned to write and read in english surprisingly fast! But I would come visit and I didnt know how to pronounce the words I knew how to write..... we figured out ways to communicate with each other and we really understand each other! but people would think it was weird... so after a while my english got better because we started spending more time together, web cam etc... but there was an issue and this is what happens to your fiancee she is used to talk to you she understands what you say, but if a different person is talking the pronunciation, variety of accents is hard to get. it would happen to me we would be with friends and people would talk to me and I had to ask to my boyfriend what are they saying?? and he would say the exact same in english too and I would get it first attemp!!! it was very frustating for me. but the only way of overcoming this is when she comes to america and spend time around people.
I really hope you can fix it explaining its not a barrier for you two. Best wishes for you two!
I had to comment because I see everybody in this forum has very good english and it took.. oh god tears to learn it, and it reminded me of myself when you mention the CO talking to her and her not catching the words!!!!