The only 'NT' girl I think I've seen and can recall (she sits right across from me in class) seems fairly consistent with the norm of a socially integrated individual.
You can tell there's something more, though, beneath the surface, especially when she starts to speak when the more abstract questions are asked in English or History. I remember when we were presenting our summer assignments, one kid did his on Arestotelianism in relation to a book, and it's overall concept. When it came to one of Aristotle's ideas on something about God or life or whatever (I can't remember, exactly), she pipes up with this question in relation to the subject, which demanded more than a one or two sentence answer, and it was well worded and quite inquisitive of her to ask. Whether or not she was just doing it for theatrics or out of honest, intellectual curiosity, it kind of came out of the blue. You don't hear stuff like that very often, especially when it's not commanded or required by an instructor. Everyone in my classes either follows an inquiry or idea the teacher asks and tries to grasp and question it (though not to as great an extent), or just tries to scrape up facts to prove it, since the concept kind of goes over their head, despite their higher grades. (The latter tend to be the more studious, though intelligent, concrete thinkers.) She's also a cheerleader, member of the student council (I think), and some other things that aren't typically applied to the 'NT' stereotype.
So, yeah, I think a lot of the time the NT girls floating around tend to bend with the standards of society, if only to project a more welcoming persona, and to appear less cold or uninviting to the majority of other people, who don't exactly work the same way, mentally.
Then again, there are those girls--probably because they're younger-- who broadcast the fact that they're so different and society is corrupted and that they're cool and wierd and, essentially, smarter than everyone else. Some of it might be true, but the mostly negative feedback towards their behavior either fuels or subdues them.