If you are going to kick yourself for not showing it to her, then all I can think is that it is better to regret something you have done than to regret something you haven't done. I would also think that your therapist might be very interested to know that you are thinking about your therapy during the times between your appointments. BTW, this is not trivial...your drawing might just be very good material for a therapy session and could lead to a break-through. Good luck!