I'm so sorry that you are going through this. One thinks that family should be the safe place but that is often not the case. I am experiencing so abandonment issues with my adopted family right now so I can relate.
Do you have friends? They can sometimes be more family than real family. If not try to lose yourself in activities that bring you in contact with positive people. If you join in groups that help others (people or animals) maybe you can form connections that are a positive influence in your life.
It's funny--- people who have family have problems with family and people without family want family. I guess what we want is something that really exists on in our imagination.
I hope things get straightened out soon.