Hi and

I am so sorry to hear about your mom being ill and your difficult relationship with the both her and your brother. Please know you are not alone and have found a place where we get it. We can help you decide how you want to handle things with your brother and with how to set boundaries as well as support you over time.
How has your brother expressed his expectation to live with you? You mentioned you are scared of his temper. Can you tell us more about that?
Harri