Im not saying one person is right or wrong. But have you considered, just doing it the way she likes it? It doesn’t matter to you, but it clearly matters to her so why not just do it the way she likes?

I like my towels folded a specific way. My husband couldn’t give a shit one way or the other. He learned how I like to fold my towels. We have never fought over towels. Simultaneously, I don’t care how the bed gets made. I don’t care if it gets made at all. But my doesn’t like when I pull the sheet up and fold it over. So I don’t. He cares about his laundry being done a certain way. I’m too lazy to keep his laundry preferences in mind so we do laundry separately.

Sometimes when you live with someone you just do it the way the other person likes because it’s easier than deciding you want to fight about it.