Who taught Georgiou? What opportunities did she have and survive?
Sometimes, you have to have that little something that tells you right from wrong. Not all of us have had right and wrong defined for us, we have to define it for ourselves. It is clearly evident in that it exists within people even in the Mirror Universe.
From her track record, it is clear that Georgiou is a psychopath and should be locked up in a deep, dank hole somewhere.