[v6sonoma]

As a child of divorce I was pretty lucky. It all depends on your relationship with her mom. If she is at all receptive to you (guessing not) try talking to her about your concerns and come up with rules you both can agree to enforce. If that isn't the case then I would say talk your daughter and explain that your rules are in her best interest. You are enforcing them because you care and that if you didn't care you wouldn't have any rules. She may not like it but in the long run hopefully she will see what you did for her. Hang in there.