Friends in Time — Grace Chetwin

Upset over her family's move to Texas and a spat with her best friend, Emma walks next door to the old Bentley mansion, mothballed and up on rigs for a trip to an historic village. There, a girl appears as if in answer to Emma's sky-wish for a friend. She's Abigail Porterhouse-Bentley, and thinks it's 1846. Emma lures her next door, planning to keep her there. But Abigail just wants to go home. Chetwin's unpredictable heroines have many funny, suspenseful moments as Emma introduces Abigail to the modern world. To stop Abigail from going home, Emma plays a mean trick on her, but then the tables turn as time switches and Emma is dumped in Abigail's time. Now Emma needs a friend more than ever as Abigail takes her revenge!