Yea, my sister sounds a lot like yours but she is 6 yrs older. She still tries to treat me like her little brother even though I am a grown man! We are constantly arguing and she refuses to take any responsibility-it's always my fault and she's not doing anything, even though I'm the one who feels harassed. It's pretty sick, at least on her part. I just want it to stop. I'm pretty easy-going and like to get along with people but if she's around she's buzzing all over the place, gossiping, getting angry, talking behind your back. I really think it's some mental condition there. I really think it will come to a yelling match which is scary, cause the last time she called the police on me. She will do anything just to win, even though she's wrong, and I just want her to leave me alone. She is renting out space rent free in my head, I want her evicted!