All of this drama is driving me crazy please help?

It started 2 years ago when my dad passed away, my brother got addicted to heroine and my aunts took my dad's money cause they thought they needed it when actually my dad paid the bills so it was hard there for a while. Well we kicked my brother out because I didn't want him doing drugs around my daughter and being a jerk all the time so he went to go live with my grandma. Now my aunts have suddenly started saying that he demands all of her money (she had to pay for her car to get fixed recently is why she is broke) and they want him to move back into this house with me. I live with my mom because she is legally blind and I help her take care of things.. and I don't want him to live here because when he is here my stress level is 10x higher than normal. Its just bullcrap that they takemy father's money from his children then get all fiesty because they think my brother is taking all my grandma's money, they are sooo greedy I want to attack them every time I see them..what am I supposed to do? Leave so my brother can constantly take advantage of my mom? I just can't do this anymore.