The following is a guided step-by-step in creating the perfect family myth.
First, you need a volunteer myth-maker. You will need a covert narcissist for this function.
The covert narcissist will need a team of flying monkeys. These are easy to create or buy.
She will need to be highly skilled in manipulation. Most likely she will have learned this craft from her mother, as did she from her mother before, and so on.
She will need to be married to an overt narcissist, this makes the ideal toxic family cocktail. She will need to create trauma-bonding and sibling rivalry in the intimate environment through various forms of chaos-creating, including divorces, constant big parties and events; Sample menu: hors d-oeuvres of guilt and shame, a main course of roasted denial bullshit, and a dessert of flaming marzipan-coated turd-lies.
She will be able to move with ballerina-like precision between states of victimhood, coquettery, contempt, servitude, flattery, and various other forms of emotional witchcraft, and be magically-skilled at spinning every pair of granny panties into thongs.
She will need to remain oblivious to the drugs her children are consuming, provided by enablers on her staff. Once they reach legal age this ‘selective blindness’ will be forgotten, or denied, or normalized, or most likely, all of the above in a varying cascade of verbal and visual spellcraft.
This is speculation only. I have no experiences or acquaintances in this domain. It is for entertainment purposes only.