It could be a story about a wife who gets addicted to drugs. To feed her addiction, she gets involved with bad company. As her addiction worsens, she starts to sell her body for money to buy drugs. This downward spiral is how she 'turns into a whore' in the narrative.
Well, it depends on how you look at it. In some 'wife turns whore stories', it can actually be a story of growth. Maybe the wife realizes that she has been living a lie in her marriage and decides to embrace a more authentic version of herself. This new version might be seen as 'whorish' by the standards of the traditional marriage setup, but in reality, she is just being true to her own feelings and desires. So, not all of these stories are negative.
It could be a scientific experiment gone wrong. Some mad scientist was trying to create a new form of life or test a new drug, and the girl, who might be a volunteer or an accidental victim, ends up transforming into a dog.
It could be due to a complex mix of personal experiences, unmet emotional needs, or perhaps a sudden shift in her self-perception and desires. But such a plot element is highly sensitive and unconventional.
In a 'wife turns whore story', it can caution about the importance of a strong support system. If the wife lacks support from her family or friends and turns to immoral ways, it warns people to cherish and maintain good relationships. Also, it can be a warning about the slippery slope of making one wrong choice after another. Maybe she starts with small lies or immoral acts and gradually descends into prostitution.
One common theme could be betrayal. When a wife is portrayed as 'turning into a whore', it often implies a sense of betrayal of the marriage vows. Another theme might be the breakdown of trust within a relationship. It could also show how external factors such as financial problems or a lack of communication can lead to a radical change in a character's behavior.
It could be a fable. In such a story, the transformation might be a symbol. Perhaps the girl represents greed or naivete, and being turned into a cow is a way to teach her (and the readers) a lesson about the consequences of certain behaviors. For example, if she was always stealing milk from the farmer, this could be his extreme way of making her understand how precious the cows are.
Perhaps the fanfiction could explore how Draco's actions as a 'whore' are a reaction to the social ostracism he faces after the war. People in the wizarding world might shun him due to his family's ties to Voldemort. So, he uses his body and relationships in a rather self - degrading way as a way to cope with the loneliness and the feeling of being unwanted. He might also be trying to attract attention, any attention, even if it's in a negative way.
Such stories often involve the wife facing extreme circumstances that lead to her losing her status and becoming enslaved. It could be due to debts, being betrayed by someone, or caught in a powerful person's schemes.
Well, it could be that Chichi is betrayed by her friends and that turns her evil. Maybe she discovers some dark secrets about her past that make her lose faith in good. Or perhaps she is influenced by an evil force that corrupts her pure heart.