At two they are only scratching the surface for noticing autism.
From what you describe it is hard to say if that is what is going on.
My youngest has a Sensory processing disorder, Opposition Defiance disorder and High functioning Autism.
He was only diagnosed with the Sensory disorder in 2010....after he turned two.
The other diagnose's we did not get until this summer/fall.
At two, he was not saying more then 5 words...and those words were not really words...more like noise's we had set up as a means for communication.
My first thought and course of action should be taking her to her doctor...and have him evaluate her.
They will be able to better tell you what is going on, on where to go next for testing.
Diagnosing Autism over the computer is not safe. I would get her in ASAP and see what you guys can find out and start to help her with:)
Good luck....it can be a slow trying process. But that is what weare here for:)
With what you have added, I would get her checked out..Cause it sounds likely something is going on.
She may just have really bad OCD. But that is also common with kids who have Autism.