squeak: “My take is a bit different. Unfortunately, this is part of a larger problem of taking random stories and elevating them to Tziddukki Torah. Without context, the story must be taken literally and a kitchen receives the din of a ladies restroom. But most likely, what she intended to say was something along the lines of “I’ve got it this time”.”
I know, right? My aunt says the same thing- she doesn’t let her bochurim in the kitchen because she’s got it under control and she doesn’t need them underfoot. If you want to argue that she’s not on the level of Rebbetzin Kotler or something like that, and that she had some kind of a deep meaning behind it, then fine, but it’s not a mitzvah min hatorah.
Remember R’ Chiya used to cook food for his wife (apparently not on Shabbos only)- he would make her one thing and she would say she actually wanted something else.