When I moved to the US from Canada I found the adjustment quite difficult, and English is my mother tongue. I can't imagine how difficult it would be to make a move from another continent - let alone not have English as my first language. She seems to have adjusted quite well and I would recommend folks go read her blog - it's very interesting.
I've been in the US for 10 years and I've adjusted, rarely feeling like a fish out of water like I used to. That's a good thing I guess. Although I now feel like a fish out of water when I go back to Canada for a visit. Adaptation is a strange phenomenon.