Two Friends, One Dog, and a Very Unusual WeekBy: Sarah L. Thomson Illustrator: Vin Vogel Take Pippi Longstockings joie de vivre, blend it with a 21st century urban setting, toss in a dog named Otto for good measure and what do you get? This joyfully carefree story about two unlikely friends. Its a pair of silver sequined sneakers that unexpectedly flips Emilys comfortable, predictable world upside down. Or, more precisely, its the girl wearing them. The shoes belong to Rani, who moves into