Her mother died of cancer when Susan was 15. Her father was said to be an alcoholic. While still in her teens, she was dancing in topless bars and using drugs. Then she met Manson.
Over the years she apologised many times for her actions and claimed to have found forgiveness in Christ. The last words she said in public were "My God is an awesome God."
Many people believe she did not deserve forgiveness. They are right. We are all sinners, and none of us deserve forgiveness. If we are forgiven, it is not because we deserve it, but because of God's wonderful grace.