Just need to get something off my chest

Sorry I've been venting a lot lately. I just need to tell someone something that happened to me before because it affects my opinion of a family member and I'm not allowed to talk about things she did or express feelings about the way she treated me without being labeled as a bad person.

What happened was that once after church, a friend of my sister asked us for a ride home in our car. When we got to the car, my sister's friend somehow stole my car keys from me and deliberately set of the car alarm.

As soon as it happened, my sister started yelling at me in front of hundreds of people coming out from church. I kept searching frantically in my bag for my keys. And every time my sister turned off the alarm with her keys, her friend would turn on the alarm again with my keys that he had stolen and my sister would keep screaming at me in public while her friend watched and laughed.

When my sister's friend finally revealed that he had my keys and had done it all on purpose, my sister was still angry at me for talking back when she yelled at me.

This was pretty much how most of my life has been like. Most car rides were spent with her putting me down and expressing hatred for me or screaming her road rage at me. And if I ever say that my decisions were influenced by fear of my sister losing her temper at me, my sister says I hold grudges and claim to be a victim. It doesn't change the fact that being treated like that every day for decades affects how I relate to people.

My sister will bring up something I said years ago as justification for treating me badly now, but if I ever mention anything she did, I get accused of falsely claiming to be a victim.

That's how life is and it is unfair. I will try to accept that. I have a hard time when I remember unfair instances like when family yelled at me for something I hadn't done, when parents punished me for my sister actions, and all the times m sister yelled at me and then denies ever yelling at me. I could move on if she wasn't still doing it, but when she gets nasty, I think of it as one continuous offense that has never ended or resolved. When I mentioned things she did to explain why I feel this way, my sister said I was an evil person and that everyone else says so too so I end up not knowing who among relatives or friends are really my friends or if they all hate me like she says.

Does anyone else have trouble letting go of stuff like this?