Here are some reasons why she hasn't won major awards:
* Genre: Her books are primarily aimed at young children, which is a category not always recognized by major literary awards.
* Focus: Her books prioritize simplicity, repetition, and engaging visuals, which are key elements for young readers, but may not be considered "literary" enough for some award committees.
* Awards are subjective: There is no single definition of what makes a "worthy" award-winning book, and awards are ultimately decided by judges with their own preferences.
Despite not winning major literary awards, Laura Numeroff's books have had a profound impact on children's literature, making a significant contribution to the world of early childhood reading.