In my case beatings happened for no apparent reason.I looked like my mom had to unload on me. and it happened infront of my siblings. Recently my sister ( the golden child) told me she has been having panic attacks.The other symptoms she explained to me sounded like ptsd. But then she was not abused.Is it possible as she witnessed my abuse and sometimes caused it( she told lies to mom and I got severely punished because of her lies),she developed those symptoms in adult life ?Witnessing my abuse has affected her too?I am trying to forget and heal from my past and on the contrary ,these days she is remembering what she has done and reiterating to me,the things she has done,the things she stole,the things she destroyed,the lies she told,the ways she got me into trouble, but in a funny way.Ofcourse I am being retraumatized because none of that is funny to me.