I think you've already made the first step by taking this dirt under the rug, and making it a known problem. Your awareness is power.

I agree that seeking counseling is a very good idea. dealing with verbal and somewhat physical abuse through your life doesn't heal the emotional scars, even when you're an adult and living on your own.

Maybe sis is in denial, and she hasn't accepted the reality of the situation. I know from personal experience that, that can happen. I agree that you should make her aware, and try to make her accept the reality of the situation. Her children's future emotional and mental health depend on it.

I envy your strength for posting the truth about your situation, not alot of people can do this. I believe you will do the right thing whether you recieve the advice you need or not.

I hope it works out for you, keep us posted.
Desirae