In all honesty, applying to Israel for Palestinian citizenship is futile. They are extremely strict about who they let into the country (non-Jewish persons), not to mention being a Palestinian in Israel is such a large, but swept under the carpet issue. To Israel, it is a Jewish state, not a "let's share it with the Arabs" state. The Arabs offered to share it in 1947 (IIRC), and the Jewish Zionists said no, they wanted all of it (of course, that's in a nutshell, leaving out many details).
I'm sure Amoona could explain it better, but search for some of the human rights violations that Israel manages to get keep out of the American media (and there's many). I'm guessing that's also a reason why she's pissed and bitter- she might be an American, but that doesn't mean she has to give up her roots, you know?
Anyway, that's just my take on things.