I can see Poodle in her, that could be it. Yorkie & Poodle...that could be one very smart little girl. She'll have you trained in no time.
Will love to see her as she grows, it's so amazing how they can change and look different from puppy to adult. I don't know if Poodles go through a fugly stage, Yorkies do, but luckily it doesn't last too long. And their great personalities help carry them through.