Dropped at ch 7

I’m sorry but what does a girl who has been sick entirely for both of her lives have this kind of knowledge. She’s making a deal with the prince with national trade agreements. I’m sorry but where is she getting this education. Isn’t she almost like a spy to get information about people like how she got the money from the abandoned mine.
Plus why haven’t she told her parents about her ability but lied about having the ability to make money which seems so stupid.