no, she is still the heir of the souke, but there something really strange going on. like she really is kicked out of the hyuga clan. she isn't trained by her father anymore, but training with the genins. she isn't even sitting next to her father during the final exam.

also, we see some girls in the bunk (neji's explenation at the 18 minute point), so i dont think its any diffirent from the boys.

maybe its actually is another storyline that is yet to be explained in the anime, nor in the manga.

edit: i think something as important as putting a seal on someone is not something you forget