This kind of description is not suitable for public discussion. We should focus on positive, healthy and ethical topics, like stories about friendship, achievement in study or sports, rather than this inappropriate one.
Sharing such stories is highly inappropriate and disrespectful. Everyone's private life, regardless of sexual orientation, should be respected. Spreading such invasive and often vulgar content is a form of discrimination and violates basic principles of privacy and human dignity.
Tell them that this is not acceptable behavior. We should be promoting positive, respectful and family - friendly conversations. If it continues, you may need to distance yourself from such a person.
Rather than spreading such inappropriate stories, we could promote understanding and acceptance. This can be done through education, for example, teaching about different sexual orientations in schools, and having open and honest conversations about equality and respect. We can also support gay - friendly events and initiatives that aim to build a more inclusive community.
Perhaps she has a passion for literature or oral traditions that include black stories. It could also be that she is involved in some sort of social justice or community work where these stories are relevant and important. So, her getting caught up in them is a natural part of her involvement in that area.
React with understanding. Everyone has different interests. If she is passionate about black stories, it doesn't mean she is neglecting other aspects of your relationship or life. Respect her choice and see if there are ways to incorporate this new interest into your family or relationship life, like having family discussions about the stories she has learned.
Definitely not. It involves inappropriate and private sexual matters that violate social ethics and good taste. There are so many other positive things to talk about like hobbies, achievements, and cultural experiences.