It was confirmed on a BP post she's Chinese. The question though is why she did it, when a taxi/Grab ride would be 150-300 baht (30-60 yuan), or BTS/MRT then Red Line at a total cost of 35-70 baht (7-14 yuan). Because in China she would be detained within seconds (anything other than a car or bike/scooter is illegal in Chinese streets), while Thailand is a "free for all".