My bet is that she either goes home to Israel to head up the Mossad (and, BTW, any Jew that sets foot in Israel is automatically entitled to be a citizen even if they have never been there before) and can thus show up in a episode every year or so. Or, in a semi-lift from current events, it is revealed that she has been a spy or leaker for this or that country or group all along and either goes to the slam or on the lamb to Russia or Botswana or wherever.
The question is how quickly do they get a new girl agent on board and who might it be?
But she already HAD Israeli citizenship and surrendered it. I don't think it's the same thing. Also consider the job she has had here. I would be very surprised to see her head up Mossad.