A few weeks ago, a younger classmate at my university found out that I was very skilled at one of my hobbies and she asked me to be her "mentor." I reluctantly agreed on the condition that I never hand hold her through the learning process.

Along the way, she casually mentions that she had her boyfriend do part of a project for her. A few days later, she says that she is single and not looking for a relationship. However, I highly suspect that she is lying to me because she never refers to him as her "ex."

I decide that since I am not going to sleep with her that I would use her as a social experiment to see the bare minimum attention an average woman requires to survive. I notice she has plenty of male friends, all of which looks like stereotypical beta males who will do favors for her all the time. However, I have yet to do anything for free for her and anything I do I demand a fairly expensive fee or exchange of goods.

Based on my observations and tests, it appears that I am not quite expendable to her because my knowledge is what is keeping me around. However, I suspect she is using me for that knowledge and eventually discard me. My goal is to keep that flow of knowledge to a minimum to see where the balance is between being satisfied with what she's getting from me and her leaving in pure frustration where she will simply give up if she doesn't get enough reward for her prying.

At this moment, I think the balance is to give her vague clues on how to do something and for her to look it up herself. She will come back to me asking if this is the proper way to do a task and I tell her to experiment, make mistakes, and ask me again. I am looking to further restrict the flow of knowledge since I know that this is my leverage in the relationship. However, I also want to use that to get her to manipulate her behavior and get her to abandon all her beta male friends just so that she can try and get more out of me (which I fully intend never to do). Once that happens, I know I will have won and I will cut communication off with her.

What are your thoughts? What is the optimal way of isolating her when your only utility to her is a unique knowledge that nobody else has? I know that the best way that requires the least amount of effort is to cut communication off immediately but, to be frank, the prospect of manipulating a creature who is a master of manipulating human behavior is too exciting to resist.