Final answer:
The title of the book and the reason Annie's mom thought she would like it cannot be ascertained from the given text; however, it is possibly something related to womanly qualities or coming-of-age themes.
Step-by-step explanation:
The title of the book Annie put in her backpack is not provided in the excerpts or the reference list, hence it cannot be definitively determined from the given information. Regarding why Annie's mom thought she would like the book, the provided text also does not include direct details about Annie's mother's reasoning, but it is reasonable to infer from the context of the type of literature mentioned--works by Annie Fellows Johnston and other novels focused on women's experiences--that Annie's mother believed she would appreciate a book that delved into womanly qualities or coming-of-age themes.