Elfo guides the reader through the difficult circumstances that can arise when a family member has a prolonged illness. Issues addressed realistically in this book include the hospital visit, medicines, fatigue and deteriorating physical appearance. Since children often have concerns they don't know how to express, Elfo demonstrates and validates feelings of sadness, fear, worry, loneliness, and love. Readers are encouraged to talk about their own situation, and suggestions are given for ways young children can help. This is an adaptation of the book When Someone is Very Sick for younger children.