Is OTHER wrong in the post ? POST : Note:

I don't speak english very well and this gets me worked up somehow, so there may be some faults.

Also I don't really know how a TLDR for the story should be worded, so any tip would be nice and as soon as I have one, this will be updated.

Backround:

I have this weird issue that when I'm stressed or bored (or sometimes just random) I "have to" either move (doing stuff with my handy works, too) or make noices (singing or humming mostly). I never really remember this being different any in my lifetime.

I can stop myself from doing it, but it makes me highly uncomfortable and nervous, even though I'm an adult now (20 years old). If I'm doing it because of stress, stopping it is very hard and makes me feel like my head will explode.

For some reason, my older sister absolutely **hates** and always has hated me doing it.

She's the favourite child of my mother, so naturally I wasn't allowed to behave like that around the family when I was younger, leading to me frequently getting scolded and punished or my sister mocking me about it until I cry, because I wouldn't stop it. I wasn't an easy kid, so they probably thought I would do it on purpose, just to be mean, never believing me I didn't.

Actual situation:

One or two years ago, my father, both of my sisters and I decided to visit a famous café to eat some cake. I already warned my family it wouldn't be easy for me since I suffer from social anxiety and there would be way to much people for me.

When we sat down, I got really nervous and started humming. Knowing that this is the thing my sister hates the most, I stopped myself from doing it and started moving my hands. She got angry about it anyways. I thought it was because it's so easily visible, so I started moving my feet instead. She got even more angry and scolded me (a bit weird since we're both adults, but I guess it's just learned behaviour, so I don't mind). My dad sided with her (obviously) and both were getting mad, so I tried holding it back. I told them I couldn‘t really stop it, but they didn't believed me and refused my propose to just leave (as there was only this opportunity to eat there). Pressure started rising, I got extremly anxious and started crying, so I decided to stop surpressing it. That stressed my sister somehow and she got so angry that she started crying then while I slowly calmed down. She calmed down later.

At the moment I was just relieved that I could follow my way (and somehow proud that I stood up for myself), since nobody could punish me for it anymore and I didn't have to get a panic attack or something and didn't even thought about her side, but afterwards I felt bad for it. I mean, I just could have gone to the bathroom and hide myself while anxiety kicks in or smth, then I wouldn't have ruined their day. And making your sister cry should in no way something that should make you feel relieved, still less proud. So AITA for making her cry and (in that moment) not even being sad about it?