I'm not sure specifically which 'Mama Flora's Family True Story' you are referring to. There could be many personal family stories with this name. Maybe it's about a particular family's experiences, relationships, and growth over time.
In most cases, Flora and Son is not a true story. It might draw inspiration from various elements but doesn't represent actual happenings. Usually, such works are crafted to entertain or convey certain themes and ideas through imagination.
It's hard to say for sure. 'Mama' could be inspired by real-life incidents but have a lot of fictional elements added for entertainment value. Or it could be completely made up from the imagination of the creators.