Hey so first off I'm sorry about your aunt and the horrible behavior of your cousins.
Second of all your anecdote about living with a sibling terrifies me. My new pad has two spare bedrooms and my dad has been intimating that it might be a good idea to have one or two of the bums living with him to come live with me instead. I'm petrified to be honest. I know my brothers, they keep weird hours and that may literally, not figuratively be the death of me.
Keep on living your best life. Take a weekend in the fall to come to Ann Arbor and tailgate with me.