Thanks alot for recording her!
Given her playful nature (and her teacher/schoolgirl kink), maybe you´d like to do some light d/s stuff with her. For example the 100-1 challenge, or that you get her realy worked up the whole day and then tease her whole body but withount touching her pussy and if she tries to touch herself, she gets punished (spanked).
Or that she has to try to be quiet, and everytime she fails, she... you know
Or a bet, that the one who comes first looses, and has to satisfy a wish from the winner.
Or that you deny her orgasm or don´t touch her at all for a period of time, just get her worked up with words and light touches and then when she doesn´t expect it you take her.
But that´s ouf course only if you two are into this stuff. And it shouldn´t come across forced. But i have a felling, that, when the mood is right, she may enjoy it