Hello Sue
I am sorry you had such uncaring parents
I can not imagine the pain you and your sister have gone through.
I am glad to see your faith is so strong.
I know it is hard to understand the whys of what you are going through, but continue to be strong and one day you will look back and realize how you have grown, strong, and proud of yourself.
You should be proud of yourself and one day you will have your dreams come true and God will give you what you need for your life to be wonderful. He gives us what we need and that is good for us. Not always what we want or think is best.
But he is there always watching over you and your sister.
Go to him in your sorrow and ask for your prayers to be answered.
Take care of yourself and never doubt that you are special to God and the Universe!