Who is Alicia Bartlett from The Rag and Bone Shop and what is their importance?

Alicia Bartlett is the seven-year-old murder victim. Her body is found in the woods near her home, where is it posed and covered with debris. Her time of death was noted as approximately one-hour after Jason Dorrant last saw her on the front porch of her home. Alicia lived with her parents and older brother, who is a classmate of Jason Dorrant.