I had a similar situation occur recently in my (failed) effort to meet/date non-American women. I'll spare you the philosophical and sociological reasons behind this move. I'll just note that I've concluded that ethnicity/race means nothing, culture is weak, and power is all important in sexual relationships.
The girl was Croatian, a former model, and lived 500 miles from my domicile. Anyways, the connection seemed there when we emailed (several times a day), chatted, were on the phone (usually 5-10 hours a week), met in person (once a month for four months), etc. - but I always had a nagging feeling the girl was spinning more than one plate - from the beginning before we met even. I don't know about the other guys, but I refused to pay for her plane tickets and tried to keep the spending even. I digress from my point... The signs of shadiness and the evidentiary support for my nagging suspicions: little things like forgetting where in the country I was from and what I did she'd forget and occasionally dissonant emotional states (too hot when I was lukewarm and vice-versa) and, of course, long disappearances and responding to my phone calls with text (aside: I hate text) - despite intense conversation. Making out was abbreviated and was progressing slowly: sex was also not forthcoming as she didn't "do that" with just any guy and had only been with two others. Right.
Anyways, I finally confronted her about my belief she was seeing other guys. It was a brazen move: most likely, she'd feign taking it to offense and leave me. She didn't actually. I played the "I know you better than you know yourself" angle and told her I was doing the same. She tried denying for a while, but then she caved. We had sex that night and I dropped her off at the airport the next morning. Despite how incredibly hot this girl was and the fact I could have hit it again, I never answered her phone calls or emails. And tears? -What a female snake's body generates when it seeks mercy. Turns out she had played this game with other guys as a way of getting to see the country, really. I felt cheap and used.
In the end, it was a foolish interlude. I had girls in the rotation that I had much more consistent and stable relationships with -- not to mention cheaper -- this was a distraction. Lessons learned:
1. Women from online sources, based on this experience and others, tend to have issues relating to their self-awareness. This is even moreso than women you come across in life and in meat-markets. Online-met women generally require peculiar forms and extra amounts of attention.
2. Women from other cultures, at least if they're even momentarily exposed to the US or have the tenacity to get here -- are no better, and probably more amoral and manipulative than American women.
3. Women with whom you think you have a super-sexual (beyond sexual) connection with may be bored or getting off on manipulating you pursuant to some psychological need, perhaps stemming from an absent father in childhood.
Lesson 1 and 3 may apply to you. Good luck. Don't expect much from this girl, even if her connection with you was genuine, her emoti-think would have stood at the precipice of love, on the one side, and, on the other, indifference -- and she's clearly leaped into the latter.