Star Trek: Dark Passions
Written by Susan Wright and published by Pocket Books, this two-part series takes place entirely in the mirror universe, with extra focus on female characters from The Next Generation, Deep Space Nine, and Voyager.
Book One features the mirror characters of Kira Nerys, Annika Hansen, and Deanna Troi while Book Two deals with the previous three along with Kathryn Janeway and Beverly Crusher.