I eventually figured out that what she was saying to me was: Why aren't you somebody else? My brother was more making fun of me, criticizing me, sometimes physically hurting me. When I complained about it (this brother was 7 years older than me), my father told me that I was too sensitive. So, his verbal, physical and emotional cruelty wasn't the problem. My being "sensitive" was the problem.
I grew to absolutely hate that brother. I have since let go of that; but, I believe my moving more than half way across the country to get away from these people helped a lot. Also, a wonderful, caring husband *(celebrating 41 years next January).