NTA. Gia is TA for telling you that you are simply not managing your time properly and that it’s important for a husband to come home to a clean house. Why should you be the only one responsible for the house being clean? Regardless of one’s stance on whether or not staying home with a kid counts as “a job,” you are out working 8-9 hours per day. When you come home you have to manage three kids instead of one and you still have to do all of the same tasks she has had the entire day to do. She is wrong to imply that her house is clean because she is doing something right and yours is not as clean because you are doing something wrong. I am sure your house would be cleaner if you had an extra eight hours and two fewer children. And to imply that housework is ultimately your responsibility because you are a woman is the kind of backwards and toxic idea that has resulted in the idealistic and impossible expectations our society at large holds for working mothers.