*Big TW* Read first. Can a victim of domestic abuse carry partial blame for the outcome of the abuse?

More specifically, can the victim of marital domestic abuse ever carry any blame in the damage caused to her child?

Consider this basic scenario, loosely based around my own current situation. And please, give considerate answers specific to this scenario only.

A narcissist marries a woman who loves him dearly. He subjects her to decades of domestic abuse - emotional, physical and financial. She does not leave him, as she loves him dearly.

They have a child together, who grows up witnessing the abuse. She is aware, but she loves her husband and she stays. The child eventually becomes a subject of domestic abuse, at the hands of his narcissistic father - emotional and physical. She is aware, and though she indirectly attempts to safeguard her child, she does not leave. The narcissist has a series of affairs, with the child being aware. She stays by her husband’s side.

The child is now mature, and every few months he begs his mother to divorce the narcissist. She loves her husband too much, and she refuses.

Eventually, the child leaves home and marries. Lo and behold, he is a narcissist and his wife becomes a victim of domestic abuse. And the cycle continues.

Is it upon the victim to safeguard her son from also becoming a victim? Is it fair or unfair to suggest that she may be partially to blame for the damage caused to her child?

Note 1: I’m not suggesting that every narcissist is abusive.

Note 2: I know that this is a brave post, I’m nervous to post it. If this post is upsetting for anyone, please tell me and I will delete it straight away. If it’s inappropriate, tell me, and I will delete it.