It sounds like this girl just wants casual sex, and if you are cool with that why ruin a good thing? Go find more 9.5s who have the same mind set and fill your calendar.
That's not helpful though, so here is my advice (though I'm not the best at phone game either, still I'll try to help).
You want control? You have control. Have a strong frame. Tell her what you are going to do, when you are going to do it. If she doesn't comply than you have to punish her. Freeze her out. See, the problem I have is that you said you only meet a few times a year... there is not a high enough frequency of contact for you to really run game on her. But I would say just try to do things on your terms. Maybe even stand her up. If she assumes that when she texts you and says you are meeting up you will, than prove her wrong. Something simple at first, just "Actually, I can't... how about this day?" If she complies, it's subtle... but it is still compliance, it's a step in the right direction. If she doesn't comply, punish her. "Your loss." Nothing more. No AFC "I'm sorry, let me try to reschedule my thing and get back to you..." Don't do that. Just assume that worse case scenario is you miss this encounter with her, and in a few months she will text again. Remember, even if you don't have something to do, just say you do as a compliance text.
That's the best I can offer, and maybe a wiser person will have better advice. Still, hope that helps some. And FYI way to go with the 9.5 asian/american lawyer. I recently got an asian/american med student... but she was more like an 8. Still, I can appreciate the appeal!
