Wow!.... her being a medical pro and wanting to do it!?!
Not sure I could resist if it was me, I'd probably prod her into doing it.
Best of luck whatever you two decide (sounds like it's her choice at this point).
Just curious.... do you refer to it as "her" penis?
It might help her decide what she wants to do with it if you actually give it to her so she knows it's really her property and can do as she pleases with it.
I started a thread on the penis ownership thing here:
http://femaledom.com/forum/showthrea...163#post125163