While trying to keep their friendship a secret from their mothers, a human girl and a mouse make a surprising discovery. Interest Level: K-3 Reading Level: 2.2 ATOS Book Level: 2.8 AR Interest Level: LG AR Points: .5 AR Quiz: 164496EN Reading Counts Level: 2.2 Reading Counts Points: 1 Lexile Measure: 550 Lexile Code: AD (Adult Directed).