Nannan2, you were probably going to be in this position no matter what you did because, no matter how good a Mum you are, sometimes this is the personality you are dealing with. Equally, you often find that the parent who does the most damage is the parent who is most yearned for and will be given the most leeway. Life can be so terribly unfair, especially when kids are involved.
My sister views what went on in our childhood in a much different way than I do. We both experienced the same traumas and disruption with a mother who would always put a man first no matter what was happening to us. In my eyes, she was the golden child (with everybody) because she was bright, witty and bubbly. I was more morose but reliable if you wanted something done. Consequently I have been the one my mother turns to when she wants something done and I have remained close in distance so there is availability in the equation too. However, about 10 years ago when my father appeared out of the blue, told her a few hardship tales, her stories about our childhood suddenly became a catalogue of abuse against us and she started distorting facts to the point of outright lies. I was quite shocked and when my sister did something I thought was a real betrayal of trust so I took a step back, she became paranoid about my relationship with my mother. Suddenly I had always been the golden child, etc, etc. By the time her skewed beliefs went round the family 3 times and I defended myself, we all hunkered down choosing the 'side' of the family we felt more understood by. It has been a nightmare and such a shock when she was the person I was closest to in all the world for most of my life. Although I think it is important to listen to your kids and be supportive, I think you have to be very careful to ensure you don't inadvertently fan the flames.