Georgiou raised a Mirror copy of Michael Burham as a daughter.
If you go to the alt universe to ##ck your alt children, to stop it being icky and weird, then congratulations! It's still weird and icky, and you are banana-pants to think it would be otherwise anywhere.
Although the Empress found a universe were the daughter she is into (romantically), was already screwing her brother. So incest is not such a big deal in the prime universe, and fingers crossed that Georgiou can make a successful love connection.
I guess the McAllister isn't really too far from how some Trekker feel Star Trek should be like.