Gail Carson Levine 
Ogre Enchanted 

Set in the world of the Newbery Honor-winning Ella Enchanted, this tale by beloved author Gail Carson Levine stars a clever heroine who is determined to defy expectationsand outwit a fairys curse.Evie is happiest when she is healing people, diagnosing symptoms and prescribing medications, with the help of her devoted friend (and test subject) Wormy. So when Wormy unexpectedly proposes to her, she kindly turns him down; she has far too much to do to be marrying anyone. And besides, she simply isnt in love with him. But a certain meddling fairy named Lucinda has been listening in, and she doesnt approve of Evies rejection. Suddenly, Evie finds herself transformed from a girl into a hideous, hungry ogre! Stuck in this new and confusing form, Evie now has only sixty-two days to accept another proposalor else be stuck as an ogre forever.