I love my mother in law we have a great relationship & she is so good to my daughter which I appreciate so much. My only…

I love my mother in law we have a great relationship & she is so good to my daughter which I appreciate so much. My only issue is that she doesn't listen to our rules that we have for our daughter. At first I never addressed the issue but now I do and she really tries to justify going against our rules. We have a great relationship and I really don't want this to pull us apart. And idk how else I can get her to listen.