Lock and Key (novel)
After her drug and alcohol addicted mother abandons her, child services forces 17-year-old Ruby Cooper to move in with her sister, Cora, who had left for college when Ruby was young. Ruby is upset about this arrangement and continues to wear the key to her old home on a chain around her neck. After learning she will be transferring to a new high school, Ruby attempts to run away but is found out. Nate Cross, Jamie and Cora's next-door neighbor, covers for her. Over the span of the story, Ruby slowly becomes closer to Nate.
Ruby (given name)
Ruby is a currently popular name in English-speaking countries. It was the second most popular name given to baby girls in England and Wales in 2009, was the 24th most popular name given to baby girls born in Scotland in 2009; was the 17th most popular name for girls in Ireland in 2009; was the second most popular name for girls in New Zealand in 2009; was among the top five names given to girls in several Australian states in 2009, 2010 and 2013; and was the 108th most popular name given to baby girls born in the United States in 2009. The name was also once rarely given to boys in the United States and was ranked in the top 1,000 names given to boys born in that country between 1900 and 1940. In its masculine form, it is occasionally used as a nickname for the name Reuben.