She seems pretty naïve so maybe a plan equally immature would work best.

“I’ll show you mine if you show me yours!” You blurt out.

‘Did you seriously I say that? Is there anything worse I could have said right then?’ you wonder.

Your mind begins to fill with all her possible responses… Let’s see….

She could slap me.
She could punch me in stomach.
She could laugh at me.
She could run away and tell everyone what a dumbass I am…

“Okay!” She says enthusiastically.

She could kick me in the groin.
She could hit me with one of her energy blasts.
She could stab… wait, what did she just say?

“Umm… What did you just say?”

“I am most interested in multi-species comparative anatomy. I would be most pleased if you would help me learn about human biology and it would seem only fair that in exchange I would teach you something about my anatomy.”

She sounds both serious and playful.

‘Wow’, you think to yourself, ‘this might be the first time that line has worked on a girl… EVER’

As she was already topless, it takes her only those few seconds you spent thinking to strip off her mini-skirt.

“Shell we begin our studies?” She says to you with a mischievous smile, “Please do not stand so far away. We must be close to each other as this will require much pleasant and joyous touching.”