Shadow only told Emily's story how she remembered it. In her story, she was raised by Chao in a garden, went out, met a mysterious cloaked robot who hypnotised her and lured her to Eggman who robotised her.
This is the story she doesn't remember...
A little bunny girl was the result of a one night stand. Her birth mother, a prostitute bear, accidentally got pregnant on the job and, nine months later, died during childbirth.
The baby bunny was given to an adoption centre, where she was given the name "Onyx." Despite only being a year old, Onyx was very intelligent and learned to walk, talk and use the big toilet before turning a year old.
On her first birthday, the little girl ran away from the orphanage and found herself living among chao in a very pretty garden. They raised her, taught her mathematics and told her to be very wary of the outside world.
However, in the four years Onyx stayed with her chao foster family, the toddler grew all the more curious of the outside world.
I'm sure you've heard the rest from Shadow at this point.