Just had a really civilised conversation with my sister about the noises she makes that I find stressful. I was clear and polite and explained why it bothers me and I apologised since it is a communal area but that I had to say cos stress can contribute to psychosis.
She was like, OK. And then she also asked me to stop some noises I make and I said, sure.
So now I’m not holding resentment against her about that which is good.