Overintrusive Relative

I do agree that I am not perfect at handling relationships. But nobody is perfect. And till now I still used to handle it in my own way. But when all worse things come together the problems get really bad n critical. In this case that nosy relative became best friend of my friend whom I used to share evrything. DH called my sil to stay with us and he introduced her to nosy relative as she was new in USA n I was in India after my delivery. I maintained distance with my close friend/neighbour thinking that she is now best friend of my nosy relative. SIL is immature and shares on n off relation with me. If something goes against her or her parents wishes she ll stop talking.