Mix a handful of Beatrix Potter, a dab of Emily Dickenson, and a generous helping of the wisdom of Uncle Remus, and you'll be well on your way to describing the delights of Mattie Grey the Mouse. With the warmth and humor she learned from a life in rural Southwest Virginia, Joy Huffman creates characters who may sport wings or fur but are recognizable as those two-legged creatures who people Mattie's world -- and ours.