Unreasonable

Someone very funny. Ask us whether can on the way send them to my mum's place, I told her I need to check if my FIL has work on that day. If yes then we send him to work and on the way pick them up and go back together. She actually replied asking "hah, there's no confirm answer? if no then we go up ourselves". Oh please, must everything have confirm answer straight away! Going back is next weekend issue, so fast must arrange meh? What is so urgent? Crazy, as if I no need to work, nothing better to do. I already asked Dear and he agreed but I still cant confirm if my FIL is working or not. She got nothing better to do is it. Everytime think so far for what.