WIBTA if I tell my grandma that I'd prefer to cook for myself? Hello I am in the senior year of highschool. In order to finish it I have to complete the "Maturita exam" - basically a big series of tests and oral exams. In order to prepare for it we have 3 weeks holiday to study. I live in a family house with my parents, sister and my grandma - she is retired. She likes to cook and she was kinda exited to cook lunches for me, but all of her food is really greasy and unhealthy. I would prefer to cook for myself.