I am trying to track down a story where the protagonist was waiting for a black hole to collapse to observe the universe that would be created inside. The protagonist had created black holes, but the contents of the universes within were boring. The theory was that our universe was part of a chain of universes whose physical properties were such that black holes that created "good" universes could form.
edit: the story was written by a woman and the protagonist was a woman. It was a short story