My girlfriends pulling away...

Hi all, I am not adopted, but my girlfriend is a Korean adoptee. She was born in Korea and was adopted at 7 months and grew up in Australia. We only started seeing each other as a couple since earlier February, and we absolutely loved being in each others company. Even talking about long term relationship goals (early I know, but tour connection was so quick and close). But at the end of that month, she flew out to live in Seoul. Which was planed well before we had met and started to chat. From the outset, I was supportive and expressed the fact that I felt she still needed to go, even though we had just started out. The plan was for me to fly over there in the next few months to spend some time with her and get to know Korea as I have never been there. For her, she had been to Korea before and tried to find her mother, but was only met with dead ends. So as I understand, moving there was to simply be close to her Mother, to be in the country where she was born, and to feel closer to the culture that she feels she should have been brought up with. All of which I have total understanding in. Weve jumped on Skype every night and message each other during the day. But obviously, trying to have a long distance relationship is always hard, especially when youҒve only just started out. Im trying to keep this short, but if you have any questions that you think need to be answered to give a better understanding of the situation, by all means ask. Since being there, she will even admit that she tries to distance herself from me. That being so far away, she struggles to feel a connection with me. So instead of having to go through the sorrow and pain of me not being there with her, she pulls herself away and asks to be left alone. There will be good days and bad days, and for the most part, IҒve tried to be as supportive and understanding as I can. To the point that weve even arranged for me to head over earl҅.at a weeks notice, so I will be heading over on Saturday coming. But the other night, I unfortunately cracked and took a verbal shot at her for something trivial, which now I see. The culmination of late nights trying to stay in touch, work stress and trying to give up smoking. I really regret the silly thing I said and since then, things have been even worse. Basiclly, she wanted space and I was annoyed that she couldn't respond to me saying good night. How stupid to get worked up over that! I love this woman, and have laid it all out on the line for her, my heart and soul. How do I try and understand with her feeling of needing emotional distance from me, when all I want to do is support her and see the relationship grow. When all she can sees is negatives, the relationship wonҒt work out, its going to be too hard. SheҒs now unsure if she wants me there, and I know that if she comes back to Australia, will resent me for it. I have tried to search the net and have come up empty, but from what Ive read in other posts, everyone here seems to be supportive and have great advice. Appreciate any feedback, advice, direction or personal experiences. Cheers!