TI, You just Nailed It!!!!!!!!!!!!!! You are grieving the loss of your mother, as well as your brother, and in some ways you are the only one left "standing" in the house and it "should" be your mother. Can't believe I missed this-------------you have lost a brother, the mother you knew, the family you had, and you have been left to deal with all of it, and to worry about your sister, and, however angry, about your mother also-----my heart is breaking for you. Every one of your feelings and thought are Normal in this situation. That makes you the healthiest one----what a heavy load.