I used to think a sexually aggressive female was the ideal. It's still fun to deal with an aggressive female, but the relaxed eager female sort of "melting into me" that way is a kind of turn-on I never thought possible.
Well, if that's what you want from a woman all you have to do is validate, validate, validate (but don't placate. -lol) If you haven't been validating your W and that's how she's acting either she's very self-validating or some other guy(s) are validating her. In other words, that's how a woman acts if she wants it and she knows she's going to get it. So either you've validated her enough to give her that impression or she's feeling remarkably self-confident and self-aware or she's very relaxed about her sexuality because she knows if she can't get some from you at the moment, other men have clearly signaled their availability.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver