BFFs Danya and Emma are known around school as "Demma." The girls are inseparable, even though they're total opposites. When a terrible car accident leaves Emma in a wheelchair, Danya is plagued with guilt. She believes the wreck was her fault. Emma believes it too, and she may never be able to forgive her friend. Hi-Lo Chapter Books for Children. This series of short novels was designed to engage a broad spectrum of struggling readers. No longer will upper-elementary students have to read material junior to their maturity and interests. Characters are age appropriate and come from diverse cultures and backgrounds. Science fiction, sports, paranormal, realistic life, historical fiction, and fantasy are just a few of the many genres. Books are no higher than a 1.5 reading level, with illustrations on every spread that support visual literacy and draw kids into the text.