One reason could be the search for something different. Maybe she is bored in her current relationship and the new woman represents an exciting change.
In a story, a wife might be seduced by another woman because she is feeling lonely. Maybe her husband is always busy at work and doesn't have enough time to be with her. The other woman comes in and gives her the attention and affection she craves. Also, it could be that the wife has a more open - minded view on relationships and is willing to experience new types of relationships when the opportunity presents itself.
They are not extremely common, but there are some. For example, in certain modern novels that explore complex relationships and sexual identities. These stories often serve to challenge traditional views on relationships and gender.
One possible reason could be the allure of the 'forbidden' or different. Since in some societies, homosexuality was once or still is considered taboo in some ways, gay stories might seem exciting because they deviate from the mainstream. Another reason could be the exploration of diverse relationships. People are often curious about how love and attraction can manifest in different forms, and gay stories offer a unique perspective on that.
In some cases, it might be about the older woman seeking a sense of youth and vitality through the younger girl. Also, the older woman may have some unmet emotional needs and tries to fulfill them through seducing the girl. For the girl, she might be naive and easily influenced by the seemingly sophisticated older woman.
Magic is a big reason. As mentioned before, an evil spell from a witch or wizard can cause the transformation. It could be out of spite or as part of a more complex magical plot.
One reason could be to explore the idea of sexual fluidity. It shows that attraction isn't always as straightforward as society might assume. Another reason might be to challenge traditional gender and sexual norms. By presenting this scenario, it makes people think about the limitations of labels like'straight' and 'lesbian'.
One reason could be cultural traditions. In some cultures, there are very defined gender roles, and if a situation demands, a person might be forced to live as a woman. For example, in certain religious or tribal cultures, there are specific tasks or roles only for women, and someone may be pushed into that role.
Sometimes it's for artistic or creative purposes. For example, if the wife is an artist or a photographer, she might want to create a unique visual piece with her husband as the subject, dressing him as a woman to add an element of surprise or to explore different aesthetics.
One reason could be family pressure. In many stories, the family might force a wife to be part of certain situations against her will. For example, if the family business is in trouble and she's made to participate in some high - stakes negotiations that she's not comfortable with.
One reason could be a lack of such intense emotional and physical attention from other relationships. If a woman is not getting much love or care in her romantic relationships or from her family, a woman friend's seductive behavior might fill that void. Another reason could be the novelty. It might be something new and exciting for her to experience this kind of attraction from a same - sex friend.