Here is my situation My twin daughters will be 15 next month. One of my daughters decided not to continue to hang around with her best friend because of the trouble she was getting into. So her twin sister and her best friend were really great and involved her in everything they did. Now the friend wrote my daughter that had been her friend for years a nasty note telling her that when she is around it is hard to have fun and that she is to mature. My daughters self esteem is not great to start with. She is very proud of the hard work she does at school to keep her grades up. Here is the problem My other daughter and the friend have become best friends which  just rubs all of this in her sister face. I have tried to talk to my daughter and explain how hard it is for her sister to forgive and forget because she feels like the friend does not want to be around her. Does anyone have any advice or suggestions for me? I am not sure what to say to them anymore.