As others say, you need to play the numbers game. Maybe 99 pushbacks for 1 who might agree. From my experience, you need to put in the effort and nearly become a regular of hers, spend and lot of money and work on her human side when chatting. If you can get private messaging her in WhatsApp or Snapchat etc, then you are getting closer.
I've had success once from this method, via Snapchat, so plenty of flirty chat and pics, then a serious chat about meeting after a while. Or as others say, maybe send an email really politely worded, and see what comes back. Again high numbers and risk of being reported as a bit of a pest.