Yes, for most of my life, but it wasn't sexual. I'm so sorry. From what I've heard, it's really hard finding stuff on this particular kind of abuse. I did read a pretty good book a few years ago called Sibling Abuse by Vernon R. Wiehe. It includes all kinds of abuse. It helped me a great deal, because up until then, I'd always been told that it was normal, even "required" for "brothers" to "torture" sisters. (What a sick, horrible culture we live in!) For me, it was beatings, constant bullying, emotional and psychological abuse, degrading (including sexual) name-calling, public humiliations, gaslighting to the point where I started losing my grip on reality...it goes on, but it's upsetting me too much to think about this right now. No one did anything except to say meekly that they shouldn't do that. Even now, no one takes it seriously when I talk about this. It's almost as "controversial" as emotional abuse. I live in a conservative state, but still, there's a ton of people who deny that these things really count as abuse at all. Totally ignoring how much damage it does to victims, long-term.