Reverse the Spell

Miss Drabble, Pat Field's neighbour, asks her to mend the fence separating their two gardens. She doesn't want Pee Wee, her frog, to get away. Which unfortunately is exactly what happens! Talis, a witness to the argument, hears Pat call Miss Drabble a witch. When he sees a frog in the kitchen wearing Pat's bracelet, he can think of only one explanation: Miss Drabble has cast a spell on Pat and turned her into a frog! What magic can Talis work to change Lady Pat back into her normal self?