I'm sorry you went through that and being blamed or people not believing you is the worst thing in the world. Know that there are people out here who believe you and know it wasn't funny or your fault.

I grew up being constantly torn apart by my older brother and sister. They mimicked the behavior of our narcissistic father and I was the scapegoat. I went through years of this continued pattern of behavior until a few years ago when we all began to realize what we'd been through. My sister ended up in an abusive marriage and my brother with a long line of abusive women. Recently, as we've all confronted what our lives have actually been like, we've become very open about the abuse/horrible behaviors and have begun to heal.

I'm not saying this will necessarily happen with you and your sister or that she deserves forgiveness, but I do hope you can make your own peace with it. Who knows, there may actually come a day when she seeks your forgiveness (I never expected it from my siblings) and it will be entirely up to you whether to give her that or slam the door in her face. In the meantime, keep trying to move forward and live the best life you can. We have faith in you.