I don't know if it's a huge sign but she has certainly changed her behavior since you have backed off. Is she softening to you? It certainly seems like it. What does it mean? Who knows..
Remember to look for the positives (no matter how small) and keep doing the things that seems to have brought about those changes - i.e - showing her you are gal and having fun (and still have a sense of humor!); stopping all pursuing behavior, etc.
