AITAH for Snoring During Online Class

I want to get closure about an event that happened about 3 years ago that still haunts me to this day.

TL&DR: sister comes to my small house when i'm sick. She uses the computer for an online class when i suddenly pass out due to sickness and make a noise a single time. Scolds me to hell. I show the door and cut ties.

I (M, 28 at that time) was living alone in a very small apartment downtown. Only 1 bedroom and a living room, which also acts as an office since i worked from home back then.

My sister, Begonia (fake name due to privacy, 37F) who is living about 2 hours away, was invited to a wedding near my house. So she asked if she could come over and basically use my house as a hub for the day - meaning she wanted to use my office space for a while, dress up for the wedding and then come back later at night and sleep. I obliged and said of course she was welcome, even though i felt sick and had no energy, i had a very high fever for a day or two.

When she arrived, she came with her husband, Mike (40M) which i was not expecting. I still welcomed him as we got along well with him. My sister quickly set herself up in the living room and got into a meeting (well, actually an online class. She is working as a professeur and sometimes gives online lectures etc.). Since the space was so limited, i welcomed her husband to my room and he sat on my bed as i sat on a stool. He quickly fell asleep and i got stuck on the stool for an hour or so.

I did not interrupt my sister since she was in an online class, but once she took a break, i entered to the living room and told her husband was sleeping on my room and there was no space left so i was going to sit on the couch on the living room, without interupting her. The couch was not visible from the computers camera in any way so i was not showing up on the webcam.

Well, after a short while i passed out and slept, since i was also sick and had a fever. Apparently when i passed out, i snored once during her online class and she felt embarassed, quickly muting herself, shouting at me & waking me up and saying that i was snoring. I apoligised, i did not sleep again afterwards and patiently waited for her online class to end. It was really an honest mistake and i know that my sound was only heard for a second only since my sister told me so afterwards.

After her online class, i quickly apoligised again. Telling her i was really sick and not feeling like myself. She was furious and angry though, told me how could i do such a thing and how inconsiderate i was. I apoligised again.

By now this was my 3rd time apoligising. She was still enraged, and she quickly started shouting and saying extremely offensive things just to hurt me. She told me that i was a loner and a an asocial weirdo for spending the friday night at home (?). She told me i was a fat ass who only knows how to sit down and play video games - mind you that back then i was dealing with a severe metabolical disorder, very similar to cyrhosis and i was really fat and insecure about that. I was also a big video game fan SINCE IT WAS MY JOB!

I asked her why she was attacking me, since i had already apoligized but she kept on going and in the end i just asked her to pack her things and leave. She did not believe and continued to rant, even told me that i was like our father (which had left us when we were little and was a very bad role model, unfortunately). I told her if she doesn't leave in 10 minutes, i'll put her stuff on the street and forcefully remove her from my appartment if needed. She still continued, so i picked some of her bags and put them near the door. Her husband came and tried to calm us both down. They packed their stuff and left.

I did not speak to her for about 1,5 years after that. Our family relatives had mixed thoughts about the issue and some blamed me.

I was certain to cut all the ties with her, but some emergencies related to my then 3 year old nephew made things weird and we had to get into contact again.

So, after 3 years and lots of thoughts on this, please tell me what you guys think about this issue? AITAH?