AITA for calling my sister wack for thinking I'm some kind of martyr for not wanting to go to therapy with LPS issues?

I 23F have Schizophrenia Paranoid Type. I'll call this disorder LPS for the rest of the post. I won't go into too much detail, but I will say this: it sucks.<br><br>&#x200B;<br><br>My sister 31F thinks she's a psychologist (she's not) and thinks she knows more about mental illness than experts. She's always saying shit like "Oh mental illness is made up of feelings." or "Your disorder is nothing." Well, guess what, sister, mental illness *is* made up of feelings, and it isn't nothing.<br><br>&#x200B;<br><br>Anyways, a few days ago my family got together and my sister said that we should all go to therapy together. I said no. I said that I didn't want to go to therapy with anyone, that I needed a professional to help me with my LPS, not my family. I think this is obvious, but maybe I'm wrong.<br><br>&#x200B;<br><br>My sister got super upset and started saying shit like "Other countries don't do that! Look at [country], their whole families go to therapy!" I replied by saying "Well, maybe that's because [country] doesn't have a disorder called LPS. This is why I need a professional."<br><br>&#x200B;<br><br>My sister started saying that I'm some kind of martyr who wants everyone to pity me. She said that I'm a "mental invalid" who can't function in society. I replied by calling her a "wack nutter" (I didn't use these words, but this is basically what I said).<br><br>So, AITA?<br><br>&#x200B;