Oh Kiwi Angel, its horrible when people do that. My Mother promised not to tell anyone, then went around telling everyone behind my back!! Including people that I had specifically asked her not to tell as I wanted to tell them myself. Focus on yourself and what you need to do. In the end I realised that although what Mum did was wrong, she was just dealing with it in her own way. It doesn't make it alright, but there's nothing we can do when stuff like that happens except look after ourselves.