Surviving Sexual Abuse and Betrayal

It's a bit to say but I'll keep it short. I was molested and forced to have sex with my brother when we were little. Let me clear that up my older sister molested and R.. me and my brother for most of our childhood after we were taken in with guardians. I still feel disgusted and traumatized to this day even though she went to prison for it when she turned 19. My brother had told on her and got closure for it. On the other hand, I didn't know how to speak about it and when I told CPS about some of it, the people watching from the other room laughed at me. Was it really that funny to watch someone be crushed? Then there was the incident at my college. It was my first year in 21 and I knew everyone and they knew me. I put too much trust in friends and it came to destroy me. The guy I was friends with knew all of what happened to me from what my sister did to the 4 times people tried to kidnap me. He knew I was a person who had a problem with using the word NO. Don't get me wrong, I always made it known when I did not want something without using that word. He even was dating my best friend and knew I had a bf but as soon as I try to help him with his rocky relationship. He targeted me and R me. I told the police and tried to get him prosecuted but the police didn't do anything and the judge just shrugged it off. Was I always made to be forsaken? I can't even say anything about it because I work for the school. It's just so suffocating. I really find it hard because my blood family's past has put hardship on me. Not only was my sister put in prison for incest on us as kids, my mom was also put in prison for being a child sex offender even though she says she was framed. Do they see how this looks on me? Every woman from my mom down was a child sex offender except me. I'm also the only one in three generations that has gone to college and hasn't gone to prison for drugs or alcohol. Why do I even have to live for this?