About 15 years ago I came across a book of short stories all written in by the same author and I believe all set in a previously established universe. As I recall it's less of a sci fi story and more a human story against a sci fi backdrop.
The one story I remember revolves around a conversation between a woman and a man who is in a relationship with her brother. Homosexuality, in this society, seems to be frowned upon, so I believe she is trying to conduct something of a one-on-one intervention to help her brother. By the end of the story she has slept with the man and become pregnant.
Sound familiar to anyone? When I read it I think I was too young to really get it, and want to revisit it sometime.