Mabel's Magical Garden by Paula Metcalf
Mabel loves to play with her friends Nigel and George. Then one day she suspects that they have been stealing her flowers and, furious, she builds a wall round her garden to keep them out. Even the sun can't get in, and inside the wall, Mabel grows lonely and sad and the flowers start to die. But Nigel and George are determined to show Mabel that if only she takes down the wall, they can all enjoy a whole meadow of flowers together. A joyful tale about friendship and the rewards of sharing, by a major new writing and illustrating talent.