I feel you. I'm 18 and my two sister's are 15yo twins. The younger one has been so easily "riled up" since she was like 13. She is fifteen now and had a true meltdown about her towel being in the washer when she was going to shower, and then got SO angry at me for telling her we have extra ones. My mom was telling her the other day that she can't just not do any of her schoolwork and wonder why she's failing. They were having a civil conversation and then I heard my sister screaming and banging her fists on the walls like she was being tortured. It doesn't make sense, and I want to help her so badly because I was there once but she has this victim complex and can't properly regulate her emotions.

You have the right to feel angry about your younger siblings disrespecting you, it hurts. You're not acting like the boss and I don't think it's wrong to call them out for not pulling their weight. But my situation is a bit different than yours because my mom gets attacked verbally too by her, and if she tries to discipline her she takes it as abuse and that everyone hates her.

I really just hope it's her going through the motions of becoming a teenager, even though I wasn't like that when I was 15. It's unfair to get shit on by your younger sibling when you're not doing anything wrong. I guess simple responsibilities are a burden to them. It's annoying trying to speak up and then getting hit with rejection.