Perhaps she is a family member. Grandmothers, for instance, often tell the stories of their grandchildren or other family members. She might be proud of you and want to pass on your story within the family or to friends.
Maybe she wants to connect with others through your story. Your story could have elements that resonate with different people. She could be using it as a way to build relationships or start conversations.
It's not acceptable. In most social and moral contexts, telling dirty stories violates the norms of proper communication and respect for others. It can create an uncomfortable or even offensive environment for those around.
Perhaps it's a reference to a female author or filmmaker who is known for her storytelling skills. There are many women in the creative fields who are excellent at crafting and telling stories, and this could be a way of referring to one of them in a more general sense.
Since we have no clue about Betty's story, it could be a love story where she met someone special and how their relationship developed. It could also be a story of her struggle, perhaps she overcame an illness or faced difficulties in her career and she's sharing how she managed to get through those tough times.
There are so many possibilities for who 'io' is and what her story might be. She could be an artist sharing her creative journey, or a scientist explaining her research in the form of a story. It could also be that 'io' is a normal person who is simply recounting a memorable event from her past, like a trip she took or a relationship she had. Without additional information, we can only speculate.
It's completely inappropriate. In our society, there are certain norms and values. Sexual stories are not something that should be shared openly. It violates the boundaries of propriety and can make others feel uncomfortable.
Kyoshi might be a character from a particular book, movie, or even a real person in a specific community. If she's from a fictional work, her story could involve things like her adventures, her relationships with other characters, and how she overcame difficulties in the fictional world she belongs to. For example, if she's in a fantasy story, her story might include battles she fought, magic she used, or secrets she uncovered.