I'm looking for a story that was published on BCTS. It consists of about 3 or 4 volumes worth of story. In the first volume mankind has spaceships. The main character is a young man who is something like a janitor or maintenance person. The ship is attacked by monsters that turn crewmen into more monsters. But something different happens with this young man and he winds up turning into a young woman with powers to fight back. Many of the battles occur on the microscopic level as the populations of "good" creatures fight the populations of "bad" creatures. By the end of volume 1 we learn that the young heroine's mother is fairly high up in Earth's political / military / scientific hierarchy.

Some people that the heroine rescues also get powers to fight for good. Eventually, she forms a coven and creates a spaceship of her own that they use to travel between planets. Apparently she is the descendant of one of a group of 5? heroines who did the same thing 1000 years ago.

Does anybody recognize this and can give me the name and author.