What is the message of book what purpose Ramona and her father?

It seems you're asking about the message of a specific book titled "What Purpose Ramona and her Father?" However, there doesn't appear to be a book with that exact title.

Are you thinking of a specific book from the Ramona Quimby series by Beverly Cleary? If so, please provide the full title and author, and I can help you analyze its message.

For example, if you're thinking of "Ramona Quimby, Age 8" or "Ramona and Her Father," I can discuss the themes of family relationships, coping with change, and the importance of understanding and empathy that run through those stories.

Please provide more details about the book you're asking about so I can give you a helpful answer!