AITA For telling my gf she is kind of lazy and not ready for a family?

I 37(m) have been with my gf 36(f) for 4 years now, last year she moved in with me into my house (small home i inherited from my grandmother). With my job i work two weeks mornings and two week evenings and i have 2 days off a week. She works part time in retail working 4 hours to 5 hours a day. When I’m on day shift i get home at 4:00pm when im on evenings I don’t get home until after midnight. With this in mind we have an agreement when i am on mornings i will cook dinner and she does the dishes, when im am on evenings she takes care of dinner and i will do the dishes before i go to bed at night. I also cook and take care of the dishes on my two days off regardless of whose week it is because im off.
We have had arguments because because often during her weeks she will leave the dishes in the sink for two days at a time letting them pile up because she says she is tired eventually i end up washing them. Recently there have been times when it is her week to cook dinner and she’s calls me before i get off work and say she fell asleep and didn’t cook so she finds something random to eat or snack on, ill come home eat some fruit and go to bed. She questions why i dont wash the dishes because its my week and i respond you didn’t cook dinner or anything for me to eat, im not your servant im not washing dishes when you didnt cook anything for me to eat. Recently we were being intimate and after she started talking about kids and how she wants them one day but isn’t ready. I responded i want them too but you’re not ready. She asked what i meant and i brought up her lack of helping me with stuff around the house.
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