Estelle first encounters Yuri Lowell as they are both attempting to escape from the castle. She enlists his aid in her search for Flynn Scifo. Along the way, Yuri gives her the nickname "Estelle". After reuniting with Flynn, she decides to continue traveling with Yuri in order to broaden her horizons. During their journey it is revealed that Estelle is both a princess and a leading candidate to succeed the throne. Unbeknownst to her, she also possesses the power of the Child of the Full Moon, which grants her the ability to use healing artes without a blastia, drawing her powers directly from the world's aer.