Books with title The Warthog's Tail

It's Haloween, and Tegan, the witch's daughter, can't wait to Trick or Treat. First she must hurry home to help with her mother's special Haloween spell. But when she gets there, she discovers a sleeping wathog is blocking her gate! Too afraid to go near the nasty, tusked beast, Tegan tries to cast a few spells, but neither the dog, nor the stick, nor the magic match wil obey her bossy commands. What's a little witch to do? Just as she begins to worry that she'll never make it home in time for Trick or Treat, an old man comes walking down the road. Seeing her distress, the old man offers a suggestion: If spells won't work, maybe Tegan should try the magic of persuasion?