Ten-year-old Livy hasn't visited her grandmother in Australia in five years, and when she returns, she gets the feeling she forgot something from her last visit. She then meets a small green creature named Bob, who reminds Livy that she promised to help him get home, and he's been waiting for her ever since. http://www.mackinvia.com/6640462 .

LEXILE 590 FIC. https://www.teachingbooks.net/ql699om.