Thinking more about this... I wonder if it is more about your T than about your actual sexual experiences. I wonder if you feel she is withholding on you, or that she has something you don't have, and you want her to give it to you. (From your comments about thinking she *could* give you information but simply won't.) Of course she could give you information. Equally, you could go looking for it yourself. Wanting to know how *she* masturbates makes me wonder if you need that as fuel for your own fantasies.