I am so tired of my fiance when it comes to his oldest daughter, she's such a little brat.. but no matter how much I try to get him to do something about the results are the same "NOTHING". She is so selfish and hateful, but he allows this behavior! Her younger sister is so well behaved, but I am afraid that she is going to begin mimicing her big sister once she realizes that it works on Daddy... The BM disciplines her when she misbehaves, but she is always threatning not to let him see the kids if he doesn't do what she wants when she wants.