Hi..I am so sorry for what your mom is putting you and your dad through. It really sounds like she needs to get help but I know she wont cause she seems to have an attitude that everyone else is wrong except her. As far as your brother not believing you about her is probably cause she acts perfectly fine around him.
Like the others have said, you need to get away from her. If she gets a new house and won't let you stay there..who cares, your better off on your own. Is there some other close family member who can look after your dad, as if she is abusing him as well he also needs support.
Hate to say it but your mom has a serious problem and the longer you stay there the worse your going to feel. Many people just think that beatings are abuse, but there is also verbal abuse and many times it can be worse then a beating as it tears your self esteem apart. Coming here and telling your story is not only helping you, but maybe others who read this and might be in the same situation. Please find a way out and keep us posted how it is going. People here do care.
All my best of wishes...JJ....
