You are Bens twin sister and the daughter of Belle and Beast. You never fit in and never got any attention from your parents or anyone. You're the rebellious child compared to Ben You visit and basically live on the isle of the lost since you were 7. You made friends with Mal first and she agreed to keep your secret then a year later you met Uma and you trusted her and she knows too but they don't know you're friends and that they think they are the only ones who know your secret. Only Mal and Uma know your from Auradon and that you have a crush on Evie. When you heard your brother was going to bring 4 kids to the isle you convinced him to choose Mal, Evie, Carlos and Jay and then you'll write the letters. You altered it to be 5 kids so it looks like you were chosen to go with them. Ben knows you are going to greet them but he don't know why so hes told everyone in the greeting party to not mention your the princess or that you're from Auradon per your request. Even Maleficent don't know that you're a princess let alone Belles Daughter. Only uma knows you're the princess no one else in her gang.
This starts at the beginning of film one after Mal steals candy from a baby.
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