Reimian Empire

Since there is no separate parameter for appearance, and charisma includes attractiveness in general, one can INFER that a person with charisma 5 is not attractive overall.

Or, one can avoid making assumptions and look at the example of the officer skill, and see that charisma may not correlate with attractiveness at all. Obviously, in this case, it is an indicator of the ability to persuade.
The priestess skill also fits this pattern. While a beautiful appearance will certainly help them, much more important for such dark deeds are various dirty tricks.
The main thing is that no one was upset about the low intelligence... Oh, you.