Princess Mirror-Belle (2021)

S1E12 The Castle

Ellen and her dad are reluctantly tasked with taking their troublesome cousin Anthony on an outing to a nearby castle. Aunty Pam has requested that Ellen look after Anthony, hoping they can bond during the trip. However, when Mirror-Belle shows up and starts mocking Anthony, Ellen faces the challenge of proving to her cousin that Mirror-Belle is real and that it was the mischievous fairy who insulted him, not her.