Methinks your Fiorella has come smack-dab up against the reality of a writing career, that it is a business, 180 degrees away from Fio's world of daydreams.
She went through all the steps--entering contests, winning contests, getting a great agent who got her a big publisher, working with a great editor. But her book, for whatever reason, has not been embraced by the waiting world, as she had assumed it would be. And now that the second book in the contract is at the publishers, her agent wants her to write a new book in a different setting.
Which leaves Fio is in a quandary about what to write that will be well-received by her agent, a publisher, and readers, yet contain the messages she wants to get out. And--oh--be a story Fio wants to tell.