Abigail Hardy is the wife of Jackson Wilde and the mother of Logan Wilde. She was a tracker for the Wyoming Menagerie, but she disappeared while on her way to the menagerie with a chinese dragon named Xiang. A postcard was sent to Chicago to Jackson and Logan Wilde from Cheyenne, Wyoming. The postcard explained that she was unable to return. She has not been heard of otherwise. Zoe did promise to help Logan find her, however.
In the third book, Abigail was found to be the prisoner of the Sterlings. She was watching over Xiang. They rescued her and Xiang and brought them to the menagerie, helping to save the menagerie from the Sterlings' plot to turn it into an amusement park.