Notably, she has behaved in a similar fashion [i.e., nervously] right before the last time that I have flown out o visit her [and Unofficially Propose - She said Yes]. The Official Engagement is in approx. 2 weeks from now.
She was extremely nervous back then, offering all sorts of irrational excuses - at the last minute - for me not flying out: e.g., she didn't want me too spend too much money to go visit her, she might not be as available to attend to me as she would given her erractic work schedule etc.
All Very "Heady" [Worrisome] Responses.
But I've just kept my Peace (and she, ultimately, has followed suit); and Everything has gone better than both she and I has ever imagined.
So, I sense that she is simply getting butterflies - as I hear is pretty common for many people before Official Weddings; and that she is trying to seek reassurance, even without appearing to do so...