Well, she's listened to English language music her whole life (her favorite artist being Madonna), and in both of those TV performances she wasn't the only one to cover an English song. The NY shirt pic is from about 4 years ago, and the song Fifty Sixty is about Andy Warhol, an American artist from NY, as well as she just generally likes New York.
You're most certainly looking too much into things-this doesn't even seem like her style. If she intends to come to this corner of the world as a musician, we'll know.
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