I remember the beginning idea of having Narcissa be a bad character, and while I would have loved to see where that went, I think that story could have turned into a monster to write within the time constraints. I'm perfectly happy having her helping Harry and Severus, if it means they get to their ultimate goal.
I'm actually nervous about seeing my story. I made all these last minute changes that were suggested, but I'm afraid. Oh well--nothing to do but wait and see. :)