Queen Lilia assumed the throne after her unknown parent, the previous monarch of Deltora, passed away. Lilia was among the numerous rulers of Deltora that Crian had sent messages to, telling the royal family of the poor conditions in Del. All of the messages were ignored with a promise that Crian's concerns would be attended to when "time allows". All of the monarchs had signed and stamped the response written by their chief advisor, and Lilia was no different.
After Lilia's death, her son, Alton, succeeded her. Jarred later recognised her name among Crian's collection of letters from the previous kings and queens of Deltora.
Lilia, as the Queen of Deltora, had access to all of the land's resources and guards. As Adin's heir, she had the ability to make full use of the Belt of Deltora and it's powers, though she never did so.