I was the bratty sibling in our family. I was still treated like a brat when I went home to see my dying mother. I have nothing to do with my brother. Once the estate was settled he dropped off the face of the earth for all I know. He said he was going to mooch off my parents until they died, and then asked to move in with me. Uh-uh!

The only relative I kept in contact with is my dad's sister, and even then I don't say much to her.

I wouldn't put up with your sister. I don't think it's mean; she may need an epiphany to wake up.