i think you should talk to her like an adult, it might just impress her, maybe mention how she just punished you after she said she wouldnt if you were honest! tell her that made you feel like you cant trust her now, or dont really feel like talking with her or going out doing what ever you did before, let her know it hurt your relationship with her, and your relationship with your friends, suttle things that you cant do to make a point without disrespecting her.