Is AUTHOR wrong in the post ? POST : I’ll try to keep this short and sweet.

Bit of background: I have a sister with a mental illness called misophonia. Basically, you know when someone chews really loud and you get annoyed by it? Imagine that on a much larger scale. It’s like Tourette’s from what I understand, when she hears one of her trigger sounds she can’t control herself and has a huge tantrum if the sound doesn’t stop. Unfortunately, I am her primary trigger. Things like tapping my fingers or shaking my leg or having my bare feet out (from what I understand it’s not just audible triggers) will cause her to explode. Because of this I basically live in a very restricted way, for the past ~5-6 years as well. I can barely do anything without triggering her. And as you might guess that can take a toll on a person. And on top of this illness, she’s also not very mature. She gets extremely (*extremely*) mad and defensive over things like doing her homework or taking her medication in the morning, or basically being called out on anything. It usually results in a screaming match, with her occasionally resulting to throwing things. After living like this for years, me and my parents are exhausted from it. And also, as a result of her low maturity, she also isn’t mature enough to find coping mechanisms for her illness outside of either going to a separate room or screaming at me to stop. My parents most of the time don’t discipline this behavior and let it happen, probably because they don’t want a screaming match with my sister. And recently I’ve been calling them out on this a lot. I’ve never said they’re bad parents or anything toxic or anything with the intention of insulting them, but sometimes we’ll get in a fight with me telling them stuff like “she’s never going to get better if you just let her run the house” (which comes with all this, most of what she says goes, or an intense fight follows). They, like me, are tired of all this too but they don’t want to fight. AITA for getting on their case for, in my opinion, not disciplining my sister? 

If you feel like there’s anything I left out (I might’ve missed something but nothing comes to mind) ask me and I’ll let you know 