I found 81 copies of that image using Tin Eye.
Among the many sites that just dump her as "amateur", "anonymous" and other crap, I found
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that names her as a 17-year-old mexican girl called KelinHa LiiNa (Kelinha Lima ? Kelinha Lina?)
Of couse, that's the Internet, this is probably a misinformation, but it's the best we can get. BTW, Kelinha Lima sounds more like a brazilian name than a mexican name.