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Your english seemed perfect to me. but i am hungarian so i have a bit of difficulty sometimes here. as far as her look, to me , she is disappointed. it is like she is walking away for good , because she got betrayed and this is her last look back. something like that. :-)

@agneslaczo, love your explanation, might be something like that I also tried to capture unavare of it, maybe it was somewhere deep in me and came out. Thank you so much!