Most of the background for my creation of Carlisle Hsing can be found on the page for Nightside City, so I won't repeat it here -- you're encouraged to go check it out, though.
So far there are just the two, but I did plot a third one way back when, and when I recently put together new editions I found myself thinking about writing more. I split that original third one into two, and the working titles are The Ruins of Mars and End of the Night. No idea whether I'll ever actually write them. The Ruins of Mars involves Carlisle Hsing going to Mars in search of her sister Alison, and End of the Night takes her back to the Eta Cassiopeia system.
And that's all. The images below can take you to the individual pages for the two novels.
That's it; here's your list of handy exits: