Wow!  Racist much?  We should all strive to look the same, act the same, and eat nothing but hamburgers and BBQ, right?  

No, she should learn our language, abide by our laws, and strive to be a productive member of society, all of which she has done in spades.  She is under no further obligation to assimilate beyond that and she is welcome to embrace her cultural heritage.  I know the head scarf is scary to you 'cause it ain't Christian, but we have no established national religion and she is welcome to dress as she wishes so long as it is lawful.  Embrace diversity, especially people such as Zabeeba who contribute so positively to our community.