No Flying in the House — Betty Brock

How would you know if you were a fairy?

Most little girls have parents to take care of them, but not Annabel Tippens. She has Gloria, a tiny white dog who talks and wears a gold collar. Annabel never thought it was strange that she had Gloria instead of real parents. Until one day a wicked, wicked cat named Belinda comes to tell her the truth -- she's not just a little girl, she's half-fairy!

And she can do lots of things that other kids can't do, such as kiss her own elbow and fly around the house. But being a fairy isn't all fun and games, and soon Annabel must make a choice. If she chooses to be a fairy, she'll have to say good-bye to Gloria forever. How can she decide between her newly found magic and her dearest friend?