Isadora Moon Goes To The Ballet by Harriet Muncaster.

Is a Dora’s mom and dad are not like other parents, her mom is a fairy, and her dad is a vampire! So, when Mr. and Mrs. Moon volunteered to go on a school trip to the ballet, Isadora knows to expect the unusual. But she doesn’t expect her beloved pink rabbit to go missing. The ballet is starting, and he is nowhere to be seen! Will she find it before the curtain rises?