While it's understandable at the same time the FL is too dumb to sympathise with, I am ashamed to admit, but as you would expect the average person who works at a call centre (long term with no particularly good prospects) is unable to adjust to such a role like Empress naturally, nor have the insight to react to the situation(s) presented.
The character building is somewhat consistent and the author to be applauded for managing so thus far, but at the same time, it was purely the author's intention to have a dumb bimbo FL. Not a particularly valid criticism but most people don't need to spend their spare time reading about some dumbass when you could meet them constantly in day-to-day life and thus makes the whole narrative much less enjoyable.