Wow, wait and see and to be patient? As a parent, I know that this is the single most difficult thing to do when your own child is involved. It can be even worse when (like in your situation) there might not be a definite cause or problem. Sometimes kids have these mysterious things that they seem to grow out of...
Best of luck with the process of discovery... And she has one cute hat!
We are hoping that it will be a 'grow out of' kind of thing but at the same time, preparing just in case.
Always good to be prepared for the worst, good luck! Hope it is the passing variety.