My family is insane what should I do?

So, found out my father is my Mom's uncle which means my cousins are also my brother and sister. My uncle/father is a nut case who molested my cousin/sister when she was little, he is a known perv. My Mom is a lien nut case who lied (when we live in philly) to my rich Aunt (who lives in tx) that she had aids, so she was able to get 200,000 dollars from her within 2 years to support her drug habit. My little brother 19 years has a baby girl on the way and my little cousin Tiff is 16 with a baby on the way. My whole family live off my 80 yea old great great aunt who is also my great aunt, who is really rich. She doesn't have much time left and most people think and I already know I'm gonna get the most money left to me because I'm her favorite. Everybody thinks I'm her favorite because she feels bad that I have parents who are related, but I think she just really like me, anyways should I leave and move to a different state, to get away from this family that really causes me allot of stress or since I'n getting money should I stay and help take care of them. I also might not be able to get an ID because me step Dad found a way to get me a social security card with his last name on it, without adopting me. So now I have a birth certificate and social card with different names on it. The social security office is making it difficult for me to get a new social card. I have 3 papers with my name on it and they still want more to prove who I am and even want a picture ID, but I cant get one without a social security card with the right last name on it. I asked my Mom and step Dad what happened to my original card and they both say the othe one lost it or had it last. Now I'm trying to get my Aunt, the wealthy one, to hire me a lawyer to fix this mess. So maybe you can understand why I want to get away from this family. Also I asked this before but yahoo keeps deleting the answer which dont even offended me so I don't know why they do that.