Hello, @rakushasu. You clearly set out a story about cannibalism. You show that the perverse behaviour has been repeated during Lizzy's work period.
If we dare to make an analysis of her personality we would be dealing with a perverse personality, people who cannot distinguish evil from good... for whom the social does not exist.
Your story is well written but leaves a bitter taste as we know that this type of person cannot change. A horror story.