I don't know. It could be based on a true story or just be the creation of the author's imagination. You might be able to find more information on the book's jacket or in interviews with the author.
It could be either. There are many works titled in a similar way, some are books and some are movies. Without more specific information, it's hard to tell for sure.
Yes, 'The Perfect Mother' is often based on a true story. It usually delves into the complex relationship between a mother and her child or children. It might explore themes like the pressures of motherhood, the sacrifices mothers make, and how society views the 'perfect' mother figure.
Yes, it was. The movie was adapted from the actual circumstances of a powerful storm that caused significant damage and had a major impact. The story was fictionalized to some extent for dramatic effect, but it originated from a real weather phenomenon.