Hi CAJ1, is this your life - its very sad. I foster children, some long term, they all have a sad stories to tell.
Can I just say one thing and I am trying to be positive here - the younger a child is when they suffer neglect, emotional and physical abuse, the deeper the scars are. The fact that you had a happy life in a loving family until you were 11 years old will in fact give you a stablity that some children will never have.
They say the personality of the child is formed by the time a child is 7 years old, the effect of trauma, abuse, emotional pain, however painful will not be so great or permanent.
Have you read the books by Dave Pelzer. He too had a normal "happy" family life till about the age of 7/8 and then his life changed dramatically. He was abused, beaten and tortured by his mother, his whole family turned against him. He has written many books about his experiences. And today he is happily married, has a son, and continues to work with disadvantaged children, abused children and adults, he lectures and gives speeches around America. Look at his website.
I really believe the reason he has had such a successful life, after such a terrible ordeal as a child is because his early life (first 7 years) was OK.
I am so sorry for you - I hope that you were able to make contact with your brother again. How is your life now ? Can you forgive your mother for not protecting you children ? I dont know what else to say.