Miss Belle is a spymaster.
That is not what her business card says. It would, if she actually had one which I am sure she does but I have not see it, tell us that she is the publisher of, and lead writer of, travel guides. You name the popular destination spot and chances are she had written about it or one of her associates have and she has a fair number of those, each eager to travel to different locales and describe what they find and provide helpful hints as to how to survive wherever and get the most out of your time and money. Quite useful for many an anticipatory voyager.
But she is a spymaster without a doubt. Those very same associates are trained by her and others working for her to do a whole lot more than just enjoy a spot and write about it. They are trained to notice everything, remember it all, and send all that interesting tidbits back to Miss Belle. And along the way they are also certain to be available for those paying for Miss Belle's services for anything else they might require, especially if it involves undercover work. And by undercover work, I really mean under the sheets work.
Miss Belle is also a madam. A very successful one. A very expensive one. And one very much in demand.
So, Miss Belle has several facets to her work and each of those work quite well together. She trains her young, beautiful women - and at least one, probably several, young men - in the skills needed to keep a client physically satisfied when they are in need of companionship on trips to those far-away placed mentioned already. She also trains them to be excellent covert operatives on her behalf, up to and including being able to defend themselves physically - and remember that the best defense is a good offense. And Miss Belle is able to parlay that gathered intelligence into a very impressive bankroll. Miss Belle is an independent spymaster. She does not work for any particular agency. She has no allegiance except to herself and her associates. And she does not come cheap.
Oh, Miss Belle's real name is, well, I am not sure if we are ever told it. This very attractive woman likely in her early 40s is known as Miss Belle to most people and just as Belle to others and she is known as Ana to her younger brother. Other than that is not said nor is much information on how Miss Belle became Miss Belle.