Oh boy... Let me see. Since she's an avid reader, she probably has read many of these, but just in case... (A couple of these might be a little bit too old for her, but I think she should be okay with any of them.)

Books by: Louisa May Alcott, L.M. Montgomery, Eleanor Estes, Agatha Christie, Maud Hart Lovelace, Elizabeth Spear, Elizabeth Enright, Margaret Sidney.

Titles (excuse the lack of italics): Across Five Aprils, Rifles for Watie, The Westing Game, Johnny Tremain, To Kill a Mockingbird, The Swiss Family Robinson, Heidi, Rebecca of Sunnybrook Farm, The Golden Goblet, Red Sails to Capri, The Door in the Wall, Pollyanna.

Can you tell I love young adult fiction? :-)