Not every book needs hours. Sen Super Mom by Chantelle Carlina runs to about eighty minutes, which places it in the useful category of stories that can be finished in one sitting, on one car journey, before one bedtime.
The title points at its own subject, a mother cast in heroic terms, and the book sits on our teen and young adult shelf. It is written to be accessible rather than intricate, and the brevity is the design rather than a shortfall.
For families looking for something to share, the short form carries an obvious practical advantage: nobody loses the thread between sessions.