Knightley was born with meth and nicotine in her system and was placed in foster care at birth. Her foster family was already caring for her older sister, so she went to live with them when she was just two days old. The first few months of her life were very challenging, as she experienced withdrawal symptoms and would stop breathing whenever she felt anxious. For the next 18 months, the state attempted to reunite her with her biological parents, but they were unable to overcome their addiction. By the time Knightley was two years old, her foster family had become her legal guardians, and she has been thriving ever since. She loves school and has developed into a well-rounded individual. Knightley is a kind and empathetic girl who enjoys water activities, gymnastics, and karate.