A 13-year-old girl never spoke, until a computer program allowed her to type her thoughts - and it spoke for her.

"All of a sudden these words started to pour out of her, and it was an exciting moment because we didn't realize she had all these words," said speech pathologist Barbara Nash. "It was one of those moments in my career that I'll never forget."

Then Carly began opening up, describing what it was like to have autism and why she makes odd noises or why she hits herself.

Watch Carly's video here. Tell us what you think.