This is completely abnormal. Such a situation involves inappropriate and private behavior that should not be shared or witnessed in a relationship. It violates normal relationship boundaries and social ethics.
Sharing this kind of content is not acceptable in a civilized society. It violates moral and ethical norms, and can make others feel uncomfortable and offended.
One common type of story is when the aunt acts as a mentor. An aunt might introduce her nephew to different books and expand his love for reading. She could also be there for him during difficult times, like when he has an argument with his friends at school. The aunt might share stories from her own childhood to make him feel better and give him advice on how to handle such situations.
This is completely inappropriate and a very abnormal and uncomfortable situation. Such a situation violates personal privacy boundaries and normal family ethics.
You should have an open and honest conversation with your girlfriend. Let her know that this makes you uncomfortable and that it's not appropriate behavior. Set clear boundaries about what is acceptable in your relationship.
It's completely inappropriate. These types of stories often cross the boundaries of proper and healthy relationships. In a civilized society, we strive for family relationships that are built on love, respect, and normal kinship. This sort of theme is not suitable for any form of creative or literary work as it can have a negative impact on the audience's perception of family values.
First, you should immediately communicate with your mom clearly about how inappropriate this is and that she needs to respect your privacy. If you feel too embarrassed to talk directly, you can write a letter to her.