HI Pink,
Welcome to HealingWell. Of course you know you're not at blame for other people's feeling which is just as bad as people who accuse depressed people as "feeling sorry for themselves" or demanding that they "snap out" of their mood or behavior. Your family is not a good support system for you and in fact they are toxic for you.
Please know your can't change your parents or siblings or make them understand depression or what you are going through. It's an issue that you should discuss in therapy and learn how to move on without your family dragging you down. I understand how bad it feels to know your own family is not there for you but we are right here to support you and help you through the good and the not so good times.
Coming here and talking with us is a huge step to learning how to deal with depression. We know where your coming from and what your going through.
Keep on talking with us.
Kindly,
Kitt