M.O.M Mothers of Monsters is purely fictional. The plot and characters are made up by the author's imagination and not drawn from real events or people.
I'm not entirely sure which specific 'Mom Mothers of Monsters' you are referring to. There could be many fictional works with such a title. If it's a relatively unknown or indie production, it might be difficult to determine its truthfulness without more research.
It's not a true story. Usually, such titles are part of the imagination of the creators to bring an engaging and unique narrative to the audience. There's no real-life basis for it.
Often, it can be greed, like in the case of Mary Ann Cotton. She wanted financial stability and was willing to kill for it. So, greed can be a major psychological factor.
A lesser - known case could be that of Amelia Dyer. She was a baby farmer in Victorian England. She took in unwanted babies for money but ended up murdering many of them. These women, based on true stories, show how a person can turn into a'mother of monsters' through their heinous actions.
It's a mix. 'The Good Mothers' has some roots in real-life situations, but the plot and characters have been fictionalized and embellished to create a compelling narrative.