Yeah, the white envy thing killed it for me too. Why can't she be proud of her heritage? I honestly think that'd make her much more compelling and interesting.
Is it really white envy though? It reads more like she wants to fit in with everyone else, like every other teenager ever. Make her an Orthodox Jew instead, nothing changes except her skin color. She still wouldn't be eating bacon, she doesn't go to parties because her father is overprotective not because of religion. Her father isn't making her wear a veil, in fact he wants her sister to not wear her head scarf. I don't remember her saying she hates her culture, but that she wants to be like everyone else. Every book about teenagers ever is about fitting in, every teenager wants to fit in.
I think you guys are reading too much into a pretty standard plot point in stories concerning teenagers.