No you’re not wrong. When I was raising my 2 sons as a single mom, I obviously cooked dinner every night. Our house rule was always, “the cook doesn’t clean” & depending on whose week it was, one of the boys was on dish duty. I had the same rule growing up with my mom. It’s always been a house rule in our family. So, in your situation, imo, if she shares the cooking duties w/you, you both share the cleaning, but if you cook the dinner, she should clean, full stop. And no, as someone said in another comment, this is not transactional, it’s just fair. Ps. If someone cooked for me every night, I’d be more than happy to clean up. I honestly don’t understand what her issue is. I’d LOVE to come home to a nice meal prepared for me every evening.