I have a "brother" I haven't spoken to in years. Completely toxic person and I don't entertain toxicity.

I have a sister who I'm the process of freezing out, but that was mostly instigated by her and I have zero problem with playing along.

I don't by that whole BS of family forever blah blah blah, toxic is toxic no matter how we are related and toxic people get booted out of my life.

Then again I find it easier than most people I know to cut people off completely... I have a "the world is a black and white problem"

I would not put up with your sister were I in your shoes, you deserve better.... Just saying.