(((Sunshine)))
I agree with what Capp said to you. And I've seen in my own family how ugly people can start to behave after the death of another family member, often out of greed or jealousy.
Keep doing what you are doing!

Take care of yourself, protect yourself from them, don't let them push you around or treat you like a child. Most important, go make those new friends, and when you find very special new friends, let them become your family. As others here have posted in different forums, just because someone is blood related does not defer on them the respect of "family." And many loving, supportive and concerned friends certainly will earn the title of family by you, by caring about you as your family should be doing.