Sorry to burst your bubble, but botting is a very secretive community. Nobody is going to tell you their methods, or how to succeed, as it is a very competitive business.
I suggest you don't go on with botting in its current state. The profits are at an all time low (for most people, considering the decline in gold prices), and ban rates are through the roof. Most successful botters these days are using heavily automated systems, and are running many, many accounts. Unless you are a highly experienced programmer, then you aren't going to get into this kind of business for a low price. Think about the costs for a moment. You will have to pay for dedicated servers to run your accounts, and an automated system for botting (this is the main thing that is going to cost you money) Unless you are prepared to drop upwards of $1000 on a system that might not even be worth it, then botting might not be for you. If you think that you're going to get away with botting on that account from your niece, you're wrong. Some people in the community have started to say something along the lines of, "It isn't about preventing a ban, but instead delaying the inevitable ban".
In summary, botting is not for everybody. It's not a get-rich-quick kind of deal. It requires a lot of time in the beginning, and in the end it might not even be worth your time.