Hi Kimmy.
I respect you for what you are doing. I really do. I have 7 kids of my own and I know how hard it can be at times. BUT, we have grown up, the little ones haven't had the chance yet and I think that it is great what you are doing for the little man.

As far as your brother goes.....I would have to say that, it doesn't have anything to do with whether or not you are a good sister or aunt. You are doing best by NOT enabling him. That makes you a good and thoughtful 'person'. JMO

I wish you the best KD.