Well, she was a great charecter, she just happened to be in the wrong place at the wrong time. The show didn't really undermine girls, due to Nacy's huge involvement in the show. We also have eleven, all different sorts of crazy magical abilities.
It bothered me that her disappearance barely gave anyone pause, and that it was so quickly established that well, she's gone, and well, she's dead. Not much mourning going on, like she was just a plot device.
I really liked her common sense and her "it's not all about pleasing a boy" attitude. Sad she's not gonna be in season 2 :(