The little girl and her sister are premature babies. Because she can not breathe spontaneously, she has to undergo surgery. The doctor gave her tracheostomy, though it saved her life, but also cut off her vocal cords, which made the little girl lose her voice. After that, she was diagnosed with cerebral palsy, and it was difficult for her to walk.
when she meets Shocks, things are going in the right direction. Amber's mother said, "they treat each other very softly, and they trust each other very much."