A kind older couple takes the girl in, and try to figure out who she is. They ask her questions, develop theories and heal her from an attack from than man's hunting dogs. She still doesn't remember a thing.
Within a week, the whole town has heard of her. The family that lost their daughter, comes to find her. The mother is completely convinced that it's her. You see, the old witch who was said to have stolen the child, had been burned out of her house, and hopefully killed, just the day that the girl arrived. Why? For stealing the same family's third child- another baby girl. There's no way that was a coincidence. They continue trying to regain her memory. It seems that the oldest daughter does not believe that this stranger is her long-lost little sister.
As time goes by, she, Isabelle, still remembers nothing. However, she has this unexplained knowledge of plants and herbs. Hmm...very suspicious.
So who is Isabelle, this stolen girl, anyway? I guess you'll have to read the book and figure out the mystery!