Girls with autism are not diagnosed very easily.  Here is a video of one brave young lady and her mom.  It is not easy to "capture" autism by video as with pictures and video, they can look and act perfectly normal.  However, to live with and try to direct autistic children, it is a very real challenge.  They have minds that are so set on something and it is very difficult to change the mindset.  It takes a lot of time and work to teach them to redirect themselves. Autistic minds just plain think differently. 

Please observe this young lady with asperger's syndrome which is a higher level of autism.

http://abcnews.go.com/Video/playerIndex?id=4181242