Reverse culture shock oddly enough comes right after you have accepted the change, and return home (if you in fact were just visiting) and now that you have changed your ways after a grueling process you have to change back and it can be just as awkward.
Throughout the documentary you can clearly see some of the stages that Heidi goes through. What was evident throughout the movie was that Heidi obviously had no preparation for culture shock, and went into Vietnam completely naíve. I believe culture shock is like getting sick. You can prepare for it, you show symptoms of it, and there is a cure to it. But for most people if no effort is put into the curing only worse comes from it.
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