I could tell you one or two things girls indulge in at around the same age as a result of awakening sexuality.
Just got back into this thread, so (sorry Daisy
) - girls of that age also masturbate (and so do many women) by stimulating their genitals. By rubbing a finger, or a similar object, round the outside of the vagina and touching the clitoris, and then pushing said finger right inside the vagina and moving it around, up and down, it's possible to secrete the same "juices" - can't think of the correct word - as would be produced if they were having intercourse. I admit I did it at that age, and it was an extremely pleasant sensation, although I truly didn't know why. I didn't feel too guilty about it but no way would I have told anyone. At that time it was my "special secret". Have to say, though, the novelty wore off after a while.