I'd break her nose, but that's just me. I don't see why anyone should put up with being abused.

Parents like that? It doesn't matter how many times you show it, they will always defend the favorite. He/she needs to go to the cops or CPS or someone. This person can't live like this forever and hope one day that things'll change because they won't if he/she doesn't do anything about it.

Fight back and beat your sisters ass OP. Don't put up with that.

Parents will never believe OP, they're very likely the Narcissistic type, and the sister is the "Golden Child", who can never do any wrong no matter what.

Let me clarify that I am not promoting domestic violence among siblings. But if your sister is someone who relies on violence to solve problems then she is unlikely to accept other means of settling things. If your parents are unwilling to step in, then teach her the consequences of hurting someone. Perhaps if she feels pain she will come to realize the gravity of her actions and stop. Think about it, but please don't hope for someone else to solve the problem without taking action yourself.

Or just stop being a little girl and fight back. What a loser

As a martial arts student of 5 years i have to agree with this statement. Learning self defense is incredibly important.

Unfortunately it's not that easy to do.. Even if you can get yourself able to do it to family(it's deserved but still difficult) you also tend to have family that will see you as in the wrong no matter what because they're your family. I've just threatened to call the cops on my brother if he harmed our dogs(he makes threats toward them even death threats) and I had people turn on me saying how it was terrible that I even threaten to call the cops on family.

#27 You did the right thing threatening him with the police on that. I personally wouldn't give a shit about what people think, if I were in a situation like that, I would not hesitate to call the cops on the person regardless of my relationship to them.

Not all houses have locks on bedroom doors. My house only has locks on bathroom doors and the front and back door to the house.

My house only has locks on the doors leading outside and on the door to the master bedroom. Not even the bathroom doors have locks.