It takes a lot for a depressed person to take care of another depressed person, even if it is your Mom. Why is your mom's financial situation any business of your brothers? Does she live with him or is it the other way around? Either way, he should not be so angry with her. You and your mom need to have a talk with him about his attitude and it's affect on her. Maybe he doesn't know that she has depression and should be told. You might want to check out the relationships forum, Maybe someone there can advise you on how to bring this up to him without causing a big fight.