You could phone her after she knows you already. It would be very wise to show your interest in her country and her culture. Do not ask her too many questions, but do ask her right questions. It is perfect to ask her why she wants to find a western men. Asian ladies are generally shy on sex topics, so do not discuss it too soon.
Good communication tips Asian ladies are shy and are reluctant to make initiating moves.
She may response you less positive than you expected, which do not suggest that she is not interested in you. She may test you to find out how much you want her. Therefore if you really interested in her, be patient and do not give up too quick. If she is angry with you, she may not shout at you or tell the reason directly. Do not feel frustrated about it.