"I'll go through many sleepless nights to hear that. I'll spend every penny we have to hear that," Fleischmann says.
He also notes that Carly's breakthrough was the result of thousands of dollars spent on years of intensive therapy. It's the kind of money most families unfortunately could never afford to spend on their autistic children.
A year after we first met Carly, she is happier, calmer and more independent. She also has her own internet blog and twitters regularly, answering questions from people all over North America about her experience with autism.
And Carly continues to mesmerize people by trying her hand -- that is, her finger -- at writing a novel called "The Elephant Princess."
But experts we spoke to said Carly's abilities are extremely rare and that her case should not raise false hope.
The Fleischmanns know that Carly is not out of the woods. She will likely require considerable support for the rest of her life. But Carly knows that she now has a voice that can help other kids. She looks at herself as someone who can make a mark on the world.
Carly: "I think the only thing I can say is don't give up. Your inner voice will find its way out. Mine did."
"I want you to close your eyes and imagine a girl all alone in the middle of the jungle. All she can hear are the sounds of the animals. But what she does not know is that the sounds aren't just random sounds. In fact, the animals are talking to each other. People think that a lion's roar is its way to scare you. But let me tell you from experience that a roar is not just a roar. Actually a roar can mean many things depending on the tone. I think that humankind is just oblivious to things that have been around for many years. I think humans are so silly. See us animals are much smarter because we understand what is going on around us. But that's another story for another day."